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GATE Mathematics (MA) 2026

2026 · 65 questions · First 10 Solutions Free
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Q1 mcq
Suresh said, “I did it yesterday.” Which one of the following options is the correct form of this sentence in indirect speech?
a.
Suresh said that I did it yesterday.
b.
Suresh says I did it yesterday.
c.
Suresh says that he did it the day before.
d.
Suresh said that he had done it the day before. Correct Answer

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Q2 mcq
To continue the sequence of tiles shown, the tile indicated by the question mark should be
Question 2 image
a.
Choice A image
b.
Choice B image
c.
Correct Answer Choice C image
d.
Choice D image

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Q3 mcq
Consider an art gallery whose walkways are shown as lines in the diagram. A black dot represents a junction of two walkways. A guard may be placed at a junction to watch over the walkways that join at that junction. The minimum number of guards needed to watch all the walkways is ________.
Question 3 image
a.
2
b.
3 Correct Answer
c.
4
d.
5

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Q4 mcq
The 2 nd of June is a Thursday in a certain year. Which day of the week is the 3 rd of July in that year?
a.
Thursday
b.
Friday
c.
Saturday
d.
Sunday Correct Answer

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Q5 mcq
A coin with heads facing up is shown as and a coin with tails facing up is shown as. Six coins are placed in the Starting Arrangement, as shown in the figure below. A “step” is defined as interchanging a pair of adjacent coins without flipping them. The minimum number of steps needed to go from the Starting Arrangement to the Final Arrangement, as shown in the figure, is ________.
a.
3
b.
6
c.
9 Correct Answer
d.
12

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Q6 mcq
Exacerbate: Mitigate:: ___________ Choose the option with the correct pair of words to fill the blank.
a.
Aggravate: Alleviate Correct Answer
b.
Alleviate: Precipitate
c.
Aggravate: Precipitate
d.
Emancipate: Exonerate

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Q7 mcq
A paper shown in Panel I is folded along the dashed lines (- - -) to construct a cube. The shaded regions shown in Panel I appear on the outer surface of the cube. Referring to cubes shown in Panel II, which one of the options is correct?
Question 7 image
a.
Only (i) can correspond to the unfolded cube in Panel I.
b.
Only (ii) can correspond to the unfolded cube in Panel I. Correct Answer
c.
Both (i) and (ii) can correspond to the unfolded cube in Panel I.
d.
Neither (i) nor (ii) can correspond to the unfolded cube in Panel I.

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Q8 mcq
In a population, patients who have high cholesterol also have high blood-pressure (BP). Some patients with high BP also have diabetes. There are no patients who have both high cholesterol and diabetes. Furthermore, 1. the total number of patients with at least one of these conditions is 75, 2. the number of patients with high cholesterol is 10, 3. the number of patients with high BP is 45, and 4. the number of patients with only high BP and no other conditions is 20. Then the number of patients who have both diabetes and high BP is _______
a.
0
b.
15 Correct Answer
c.
20
d.
10

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Q9 mcq
Four people P, Q, R, and S, of different ages, make the following observations. P – I am younger than S. Q – I am neither the youngest nor the oldest. R – P is older than me. Based on these observations, the youngest person is ______.
a.
P
b.
Q
c.
R Correct Answer
d.
S

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Q10 mcq
Circles $C$ 1, $C$ 2, and $C$ 3, with centers $O$ 1, $O$ 2, and $O$ 3, and radii $r$ 1, $r$ 2, and $r$ 3, respectively, touch each other as shown in the following figure. Given $r$ 1 = 2 cm, $r$ 2 = 1 cm and the angle $∠O$ 1 $O$ 3 $O$ 2 is 90°, $r$ 3 = _____ cm.
Question 10 image
a.
1 (-3 + $\sqrt{17}$) 2 Correct Answer
b.
1 (3 + $\sqrt{17}$) 2
c.
1 (-2 + $\sqrt{17}$) 2
d.
1 (-3 + $2\sqrt{17}$) 2

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Q11 mcq
Let $M$ 3 (ℝ) be the vector space of all 3 $\times$ 3 real matrices over ℝ under usual matrix addition and scalar multiplication. Let $T$ 3 (ℝ) be the set of all 3 $\times$ 3 real upper triangular matrices. Which one of the following is TRUE?
a.
The quotient space 3 ⁄ $T$ (ℝ) is isomorphic to the vector space of all 3 $\times$ 3 $M$ (ℝ) 3 real skew symmetric matrices over ℝ under usual matrix addition and scalar multiplication.
b.
The quotient space 3 ⁄ $T$ (ℝ) is isomorphic to the vector space of all 3 $\times$ 3 $M$ (ℝ) 3 real symmetric matrices over ℝ under usual matrix addition and scalar multiplication.
c.
The quotient space 3 ⁄ $T$ (ℝ) is isomorphic to the vector space of all 3 $\times$ 3 $M$ (ℝ) 3 real lower triangular matrices over ℝ under usual matrix addition and scalar multiplication.
d.
The quotient space 3 ⁄ $T$ (ℝ) is isomorphic to the vector space of all 3 $\times$ 3 $M$ (ℝ) 3 real matrices with trace zero over ℝ under usual matrix addition and scalar multiplication.
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Q12 mcq
Let $I$ be the integral defined as follows: 1 $y$ 2 1 $I$ = $\int \int √ dx dy$ + $\int \int dx dy$ 0 0 1 $\sqrt{y}-1$ If the order of the integration is changed, then which one of the following is the correct expression for $I?$ 1/2 $x$
a.
$\int$ 0
b.
$\int \int$ 2 0 $x$
c.
$\int \int$ 2 0 $x$
d.
$\int \int$ 2 1 $x$ -1 $dy dx$ 0 $x$ 2
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Q13 mcq
Let $C$ denote the Cantor set and $f:$ [0,1] $\to$ ℝ be defined as follows: $x$ 2026 for $x$ ∈ $C$ $f(x)$ = 2 $cos(πx)$ for $x$ ∈ [ 0, ] $\C$ { $sin(πx)$ for $x$ ∈ [, 1 ] $\C$ 2 1 1 The value of the Lebesgue integral of $f(x)$ over the interval [0,1] is equal to
a.
2 $π$
b.
1 $π$
c.
3 $π$
d.
0
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Q14 mcq
Let $G$ be a group of order 595. Which one of the following is TRUE?
a.
$G$ cannot have a proper normal subgroup.
b.
$G$ must have a proper normal subgroup.
c.
$G$ cannot have an element of order 17.
d.
The number of Sylow 5-subgroups is 17.
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Q15 mcq
Let $u(x, t)$ be the solution of the initial value problem for the heat equation on the real line: $∂u ∂$ 2 $u$ $=k$, $-\infty$ < $x$ < $\infty, t$ > 0, $k∈R$ $∂t ∂x$ 2 with the initial condition $u(x,$ 0) = $e -a|x|$, $a$ > 0. $\infty$ If $û(w, t)$ = $\int u(x, t)e iwx dx$ is the Fourier transform of $u(x, t)$ with respect $-\infty$ to $x,$ then $û(w, t)$ is equal to
a.
$2a$ $a$ 2 $+w$
b.
$a$ $a$ 2 $+w$
c.
$2a$ $a$ 2 $+w$
d.
1 $\sqrt{4} πkt$ $e 4kt$ $-w2$
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Q16 mcq
Let $f:$ ℝ 2 $\to$ ℝ 2 be defined as $f(x, y)$ = $(e x$ cos $y$, $e x$ sin $y)$. Which one of the following is TRUE?
a.
$f$ is one-to-one.
b.
The Jacobian of $f$ is negative.
c.
$f$ is locally invertible.
d.
$f$ is invertible on ℝ 2.
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Q17 mcq
Let $f:$ ℂ $\to$ ℂ be defined by $f(z)$ = $|z|$ 2 - $5z̅$ + 2. Which one of the following is TRUE?
a.
$f$ is differentiable at $z$ = $5i.$
b.
$f$ is differentiable at $z$ = 5.
c.
$f$ is differentiable at $z$ = $-5i.$
d.
$f$ is differentiable at $z$ = -5.
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Q18 mcq
Let $D$ = ${z$ ∈ ℂ | $|z|$ < 1} denote the unit disc in the complex plane ℂ. Let $f: D \to D$ be an analytic function which satisfies $f(0)$ = 0. Then which one of the following is a possible value of $f′(0)?$
a.
5 2
b.
$i$ 10
c.
3 2
d.
5 - $i$ 2
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Q19 mcq
Let $X$ be the space of all continuously differentiable real valued functions on [0,1]. Define the following norms on $X:$ $p$ 1 $(x)$ = $sup{|x(t)|$ ∶ $t$ ∈ [0,1]} $d$ $p$ 2 $(x)$ = sup {| $x(t)|$ ∶ $t$ ∈ [0,1]} $dt$ and $p$ 3 $(x)$ = $p$ 1 $(x)$ + $p$ 2 $(x).$ Which one of the following is TRUE?
a.
$(X, p$ 1) is a Banach space.
b.
$(X, p$ 2) is a Banach space.
c.
$(X, p$ 3) is not a Banach space.
d.
$(X, p$ 3) is a Banach space.
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Q20 mcq
Let $X$ be a set with at least two elements. Let $d$ 1, $d$ 2 and $d$ 3 be metrics on $X.$ Which one of the following is NOT a metric on $X?$
a.
$d(x, y)$ ≔ $min(d$ 1 $(x, y),$ 3) for all $x, y$ ∈ $X.$
b.
$d(x, y)$ ≔ $max(d$ 2 $(x, y),$ 3) for all $x, y$ ∈ $X.$
c.
$d(x, y)$ ≔ 3 for all $x, y$ ∈ $X.$ 10 $d (x,y)$ $1+d (x,y)$ 3
d.
1 $d(x, y)$ ≔ $(d (x, y)$ + $d (x, y)$ + $d (x, y))$ for all $x, y$ ∈ $X.$ 3 1 2 3
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Q21 msq
Let $P$ be a 3 $\times$ 3 real symmetric positive definite matrix. Which of the following statements is/are TRUE?
a.
$Q$ ⊤ $PQ$ is positive definite for all nonzero $Q$ ∈ ℝ $3\times3$.
b.
$Q$ ⊤ $PQ$ is positive semidefinite for all $Q$ ∈ ℝ $3\times3$.
c.
$Q$ ⊤ $PQ$ is positive definite if $Q$ ∈ ℝ $3\times3$ is nonsingular.
d.
$Q$ ⊤ $PQ$ is not positive semidefinite for some $Q$ ∈ ℝ $3\times3$.
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Q22 msq
Let $f:$ ℝ 2 $\to$ ℝ be a function defined as follows: $x \sqrt{x}$ 2 + $y$ 2 $f(x, y)$ = { $|x|$ 0 for $x$ = 0 for $x ≠$ 0 Which of the following statements is/are TRUE?
a.
$f(x, y)$ is continuous at (0,0).
b.
For any $u$ ∈ ℝ 2, the directional derivative of $f$ at (0,0) in the direction of $u$ exists.
c.
$∂f$ $∂x$
d.
$f(x, y)$ is differentiable at (0,0).
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Q23 msq
Let ℤ 11 be the ring of integers modulo 11. Let ℤ 11 $[x]$ be the ring of all polynomials with coefficients in ℤ 11. Which of the following statements is/are TRUE?
a.
The polynomial $x$ 2 + $x$ + 4 is irreducible over ℤ 11.
b.
ℤ 11 $[x]$ ⁄ $〈x$ 2 + $x$ + 4〉 is a field.
c.
The ideal $〈x$ 2 + $x$ + 4〉 is maximal.
d.
The ideal $〈x$ 2 + $x$ + 4〉 is not a prime ideal.
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Q24 msq
Consider ℝ with the topology $τ$ = ${A$ ⊆ ℝ ∶ $A c$ is finite} ∪ ${φ}.$ Which of the following statements is/are TRUE?
a.
(ℝ, $τ)$ is a Hausdorff space.
b.
Any finite subset of (ℝ, $τ)$ is closed.
c.
(ℝ, $τ)$ is compact.
d.
(ℝ, $τ)$ is connected.
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Q25 msq
Consider the following partial differential equation:
$∂$ 2 $f(x,$ $y)$ $∂$ 2 $f(x,$
$a$ + $b$
$∂x$ 2 $∂y$
where $a$ and $b$ are distinct positive real numbers. The combination(s) of the values of the real parameters $ξ$ and $η$ for which $f(x, y)$ = $e 2ξx+ηy$ is a solution of the given partial differential equation, is/are
a.
$ξ=$ 1, $η=$ 2 $\sqrt{a} \sqrt{b}$
b.
$ξ=$ 0, $η=$ 0
c.
$ξ=$
d.
2 $ξ$ = 0, $η$ = 2 $√$ $b$
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Q26 msq
Consider the following assignment problem where $X, Y, Z$ are tasks, $P, Q, R$ are agents and the cost matrix is given by
X Y Z
P 4 2 8
Q 2 3 7
R 3 1 6
Which of the following statements is/are TRUE for an optimal assignment?
a.
The cost is 9.
b.
Agent P is assigned to task Y.
c.
Agent Q is assigned to task X.
d.
Agent R is assigned to task Y.
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Q27 msq
Consider the following differential equation: $2x(x$ - 2) 2 + $3x$ + $(x$ - $2)y$ = 0 $d$ 2 $y dy$ 2 $dx dx$ Which of the following statements is/are TRUE ?
a.
The point $x$ = 2 is not a singular point.
b.
The point $x$ = 2 is a singular point.
c.
The point $x$ = 2 is a regular singular point.
d.
The point $x$ = 2 is not a regular singular point.
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Q28 nat
Let $T:$ ℝ 3 $\to$ ℝ 3 be the linear transformation which reflects every vector in ℝ 3 through a two-dimensional subspace of ℝ 3. Let $P$ ∈ ℝ $3\times3$ be the matrix 1 0 0 representation of $T$ using the basis { (0), (1), (0) }. 0 0 1 Then the value of 2 $\times trace(P)$ - 3 $\times determinant(P)$ is equal to. (answer in integer)
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Q29 nat
Let $x$ 3 - $x$ + 1 ∈ ℤ 3 $[x],$ where ℤ 3 $[x]$ is the ring of all polynomials with coefficients in ℤ 3. Then the degree of the field extension 3 ⁄ $〈x$ 3 - $x$ + 1〉 of ℤ 3 is equal to. (answer in integer) ℤ $[x]$ $dy$
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Q30 nat
Consider the differential equation = $x$ + $y$ with the initial condition $y(0)$ = 1. $dx$ Using the modified Euler’s method, the second approximation to $y(h),$ where ℎ = 0.05 (step size), is equal to. (rounded off to TWO decimal places)
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Q31 nat
Let 1 2 $x n$ $n$ + (sin $e$) $α$ = lim $\int dx$. $n\to\infty 7n$ 2 + $x$ 8 0 The value of $14α$ is equal to
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Q32 nat
. (answer in integer) $x$ Let $X$ =, ‖ ⋅ ‖ 1) where ‖($y$)‖ = $|x|$ + $|y|$ + $|z|$ and $T: X \to X$ be a linear (ℝ 3 $z$ 1 transformation defined as $x$ 1 $x$ 1 3 $T$ ($y$) = (2 2 -2) ($y$). $z$ 1 3 -3 $z$ Then the operator norm of $T$ is equal to. (answer in integer)
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Q33 nat
Consider the following Linear Programming Problem (LPP): maximize $z$ = $10x$ 1 + $20x$ 2 subject to $x$ 1 $\le$ 36 $x$ 2 $\ge$ 42 $x$ 1 + $x$ 2 $\ge$ 48 $5x$ 1 + $x$ 2 $\le$ 150 $x$ 1, $x$ 2 $\ge$ 0 The maximum value of $z$ in the above LPP is equal to. (answer in integer)
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Q34 nat
The number of distinct topologies on the set {1, 2, 3} consisting of exactly four elements is equal to. (answer in integer)
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Q35 nat
For $a n$ ∈ ℂ, $n$ = 0,1,2, …, the power series $\infty$ ∑ $a n (z$ - 2) $n$ $n=0$ converges at $z$ = 5 and diverges at $z$ = -1. Then the radius of convergence of this power series is equal to. (answer in integer)
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Q36 mcq
$y (x)$ 1 The solution $y(x)$ = () of the initial value problem $(x)$ $y$ 2 $dy$ -3 4 =() $y,$ -2 3 $dx$ is equal to
a.
1 2 $x -x$ 3 () $e$ + () $e$ 1 1
b.
1 2 $x -x$ -3 () $e$ + () $e$ 1 1
c.
1 2 $x -x$ 3 () $e$ + 2 () $e$ 1 1
d.
1 2 $x -x$ 3 () $e$ - () $e$ 1 1
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Q37 mcq
1 0 0 Let $P$ = (0 9 0). Define an inner product on ℝ 3 with respect to $P$ as 0 0 16 $〈x, y〉 P$ = $x$ ⊤ $Py,$ for all $x, y$ ∈ ℝ 3. 1 1 Consider the subspace $V$ = span { (0), (1) }. Which one of the following sets is 0 1 an orthonormal basis of $V$ with respect to $〈x, y〉 P$ ?
a.
1 0 { (0), (1) } 0 1
b.
0 0 { (1), (1) } 0 1
c.
0 1 1 { (0), (5) } 1 0 5
d.
0 1 1 { (0), ($\sqrt{2}$) } 1 0 $\sqrt{2}$
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Q38 mcq
The value of the contour integral (1 - $z)(3cosz$ + $5sinz)$ $dz$, $\int$ 1 - $z$ 101 Γ 7 where Γ = ${z$ ∈ ℂ ∶ $|z|$ = }, oriented in the counter-clockwise direction, is equal 9 to
a.
$2πi$
b.
$-2πi$
c.
0
d.
$4πi$
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Q39 mcq
$-n$ Let $f(z)$ = ∑ $\infty$ 5 $cos(nz)$. On which one of the following domains, does $f(z)$ $n=1$ represent an analytic function?
a.
${z$ ∈ ℂ ∶ |Im $z|$ < ln5}
b.
${z$ ∈ ℂ ∶ |Im $z|$ > ln5}
c.
${z$ ∈ ℂ ∶ |Re $z|$ < ln5}
d.
${z$ ∈ ℂ ∶ |Re $z|$ > ln5}
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Q40 mcq
Let $δ(t)$ be the unit impulse function defined by $δ(x$ - $x$ 0) = 0 when $x ≠ x$ 0 and $\infty$ $\int δ(x$ - $x$ 0) $dx$ = 1. $-\infty$ Consider the following initial value problem 2 + + $2y$ = $δ(x$ - 5) $d$ 2 $y dy$ $dx$ 2 $dx$ $dy$ with $y(0)$ = 0 and (0) = 0. Which one of the following is TRUE? $dx$
a.
Choice A image
b.
Choice B image
c.
Choice C image
d.
$y(10)$ = 2 $5\sqrt{15} e$ 5/4 sin () $\sqrt{15}$ 4
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Q41 mcq
Which one of the following statements is TRUE?
a.
The set of all 2 $\times$ 2 real matrices under usual matrix addition and multiplication is a Unique Factorization Domain.
b.
The set of all real valued functions under usual function addition and multiplication is a Unique Factorization Domain.
c.
The set of all polynomials with coefficients in ℝ under usual polynomial addition and multiplication is a Unique Factorization Domain.
d.
The set of Riemann integrable functions in [0,1] under usual function addition and multiplication is a Unique Factorization Domain.
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Q42 mcq
Let ℓ $\infty$ = ${x$ = $(x n$) $n\ge1$ | $x n$ ∈ ℝ, sup ${|x n$ |: $n$ = 1,2, … } < $\infty}$ with the $x x$ supremum norm. Let $T:$ ℓ $\infty \to$ ℓ $\infty$ be given by $T(x$, $x$, $x$, …) = $(x$, 2, 3, …). 1 2 3 1 2 3 Which one of the following is TRUE?
a.
$T$ is bounded but not one-to-one.
b.
$T$ is one-to-one but not bounded.
c.
$T$ is bounded and the inverse (from the range of $T)$ exists but not bounded.
d.
$T$ is bounded and the inverse (from the range of $T)$ is bounded.
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Q43 mcq
Let $u(x, t)$ satisfy the wave equation ∂ 2 $u$ ∂ 2 $u$ 2 = $c$, - $\infty$ < $x$ < $\infty, t$ > 0, $c>0$ $∂t$ 2 $∂x$ 2 with 1 if $|x|$ < 1 $u(x,$ 0) = { 0 otherwise and $∂u$ $(x,$ 0) = 0. $∂t$ By using D’Alembert’s formula, the maximum value of $u(0, t)$ for $t$ > 0 is
a.
1
b.
1 2
c.
1 4
d.
0
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Q44 mcq
∂ 2 $T$ ∂ 2 $T$ Consider the Laplace equation + = 0, 0 < $x$ < 1, 0 < $y$ < 1, with the $∂x$ 2 $∂y$ 2 boundary conditions $T(x,$ 0) = $x,$ $T(x,$ 1) = 1 + $x,$ 1 1 Then the value of $T$ (,) is equal to 2 3
a.
7 6
b.
5 6
c.
1 6
d.
1 2
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Q45 mcq
Let $E$ 1 and $E$ 2 be subsets of a normed linear space $X,$ and $E$ 1 + $E$ 2 = ${x$ + $y$ ∶ $x$ ∈ $E$ 1, $y$ ∈ $E$ 2 } $E$ 1 $\times E$ 2 = ${(x, y)$ ∶ $x$ ∈ $E$ 1, $y$ ∈ $E$ 2 }. Which one of the following is NOT TRUE?
a.
If either of $E$ 1 or $E$ 2 is open, then $E$ 1 + $E$ 2 is open.
b.
If $E$ 1 and $E$ 2 are convex, then $E$ 1 + $E$ 2 is convex.
c.
If $E$ 1 and $E$ 2 are closed, then $E$ 1 + $E$ 2 is closed.
d.
If $E$ 1 and $E$ 2 are connected, then $E$ 1 $\times E$ 2 is connected.
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Q46 mcq
For a transportation problem, let $c ij$ denote the unit cost of the cell $(i, j).$ Assume that $c$ 11 = 10, $c$ 12 = 12, $c$ 21 = 11 and $c$ 22 = 13. Let α $i$ and β $j$, $i, j$ = 1,2,3, represent the simplex multipliers associated with any basis corresponding to the unit cost $c ij$. Assume that α 1 = $x,$ α 2 = $x$ + 1, β 1 = $y$ and β 2 = $y$ + 2. The relative cost coefficient $d ij$ is the difference between the current solution and the new improved solution. If $x$ = 4, $c$ 13 = 19 and β 3 = $y$ + 5, then which one of the following is TRUE?
a.
$y$ = 6 and $d$ 13 = 7
b.
$y$ = 6 and $d$ 13 = 4
c.
$y$ = 5 and $d$ 13 = 7
d.
$y$ = 5 and $d$ 13 = 4
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Q47 mcq
Let $X$ and $Y$ be topological spaces and $f: X \to Y$ be a continuous and bijective mapping. Which one of the following statements is TRUE?
a.
$f$ is a homeomorphism if $X$ and $Y$ are compact.
b.
$f$ is a homeomorphism if $X$ is Hausdorff and $Y$ is compact.
c.
$f$ is a homeomorphism if $X$ is compact and $Y$ is Hausdorff.
d.
$f$ is a homeomorphism if $X$ and $Y$ are Hausdorff.
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Q48 msq
Let $P$ and $Q$ be 3 $\times$ 3 nonzero real matrices. Assume that there exists a 3 $\times$ 3 real nonsingular matrix $S$ such that $S$ -1 $PS$ and $S$ -1 $QS$ are both upper triangular. Which of the following statements is/are TRUE?
a.
The matrix $PQ$ - $QP$ is invertible.
b.
The matrix $PQ$ - $QP$ is nilpotent.
c.
The matrix $I$ + $PQ$ - $QP$ is invertible, where $I$ is the 3 $\times$ 3 identity matrix.
d.
If $PQ$ - $QP$ is a nonzero matrix, then $PQ$ - $QP$ is diagonalizable.
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Q49 msq
2 2 2 Let $S$ = ⋃ $\infty {(x, y)$ ∈ ℝ: $(x$ - $n)$ + $y$ = } with usual topology. Which of $n=1 n$ 2 the following statements is/are TRUE?
a.
$S$ is not compact.
b.
$S$ is compact.
c.
$S$ is connected.
d.
$S$ is not connected.
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Q50 msq
$z 1+z$ Let $f(z)$ = and $g(z)$ = be two Mӧbius transformations defined on the $1-z 1-z$ unit disc $D$ = ${z$ ∈ ℂ ∶ $|z|$ < 1}. Consider the following statements: $S$ 1: $f(D)$ ⊆ $g(D)$ $S$ 2: $g(D)$ ⊆ $f(D)$ Which of the following statements is/are CORRECT?
a.
$S$ 1 is true.
b.
$S$ 2 is true.
c.
$S$ 2 is true and $S$ 1 is false.
d.
Neither $S$ 1 is true nor $S$ 2 is true.
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Q51 msq
Let α and β be the roots of the indicial equation obtained in the method of finding Frobenius series solution to the differential equation: $2x$ 2 - $x$ + (1 - $x$ 2 $)y$ = 0. $d$ 2 $y dy$ $dx$ 2 $dx$ Which of the following statements is/are TRUE?
a.
$α≠β$
b.
α-β∈ℤ
c.
α-β ∉ℤ
d.
α= β
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Q52 msq
Let $Q[x]$ be the ring of all polynomials with coefficients in ℚ under the usual polynomial addition and multiplication. Let $T: Q[x] \to Q[x]$ be defined by $T(p(x))$ = $p(x$ 2), for all $p(x)$ ∈ $Q[x]$. Which of the following statements is/are TRUE?
a.
$T$ is a ring homomorphism.
b.
$T$ is one-to-one.
c.
$T$ is onto.
d.
$T$ is a ring isomorphism.
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Q53 msq
Let $X$ be any normed linear space and $X$ ′ be the dual space of $X.$ Which of the following statements is/are TRUE?
a.
If $X$ is separable and $X$ ′ is non-separable, then $X$ must be reflexive.
b.
If $X$ is separable and $X$ ′ is non-separable, then $X$ cannot be reflexive.
c.
If $X$ is reflexive, then $X$ ′ is reflexive.
d.
If $X$ ′ is separable, then $X$ is separable.
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Q54 msq
Let (ℤ $n$, +) be the group of integers modulo $n.$ Let $G$ = ℤ 30 ⨁ ℤ 12 be the external direct product of ℤ 30 and ℤ 12. Then which of the following statements is/are TRUE?
a.
$G$ is not a cyclic group.
b.
The order of the element (14,7) in $G$ is 98.
c.
The order of the element (14,7) in $G$ is 60.
d.
There is an element in $G$ of order 360.
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Q55 nat
2 1 0 0 0 0 0 2 0 0 0 0 0 0 2 1 0 0 Let $J$ =. 0 0 0 2 0 0 0 0 0 0 3 1 (0 0 0 0 0 3) Then the geometric multiplicity of the eigenvalue 2 of $J$ is equal to (answer in integer)
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Q56 nat
Let α = ∬ $F⃗$ ∙ $n̂ dS,$ where $F⃗$ = $(2x$ + $3z)î$ + $(xz$ - $y)ĵ$ + $(y$ 2 + $2z)k̂$ and $S$ is $S$ the sphere with centre at (3, -1, 2) and radius 9. Here, $n̂$ is the unit normal drawn outward and $î$, $ĵ$, $k̂$ are unit vectors. 1 Then the value of α is equal to 36 $π$
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Q57 nat
. . (answer in integer) Consider the problem of maximizing $z$ = $(x$ 1 $x$ 2 $x$ 3) (0 2 1) ($x$ 2) 2 0 0 $x$ 1 0 1 2 $x$ 3 subject to $(x$ 1 $x$ 2 $x$ 3) ($x$ 2) = 1, $x$ where (2) ∈ ℝ 3. $x$ 1 $x$ 1 $x$ 3 $x$ 3 Then the maximum value of $z$ is. (answer in integer)
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Q58 nat
Let $P$ 3 (ℝ) be the vector space of all polynomials of degree at most three with the real coefficients under usual polynomial addition and scalar multiplication. Let $T: P$ 3 (ℝ) $\to$ ℝ 2 be the linear transformation defined as $T(p)$ = $(p(1), p$ ′ (1)) for all $p$ ∈ $P$ 3 (ℝ), where $p$ ′ is the derivative of $p.$ Then the nullity of $T$ is equal to . (answer in integer)
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Q59 nat
The number of zeros of the complex polynomial $z$ 6 + $5z$ 3 + $4z$ + 11 in the annulus ${z$ ∈ ℂ ∶ 1 < $|z|$ < 3} is equal to. (answer in integer)
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Q60 nat
Let $L$ 2 [0, π] denote the space of all real valued Lebesgue square integrable functions on [0, π]. Let $T: L$ 2 [0, π] $\to L$ 2 [0, π] be defined as follows: $π π$ $T(f(x))$ = $sinx \int f(t)cost dt$ + $cosx \int f(t)sint dt$. 0 0 4 Then the value of $‖T‖$ is equal to $π$
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Q61 nat
. (answer in integer) Let Ω = ${(x, y)$ ∈ ℝ 2: $x$ 2 + $y$ 2 < 1} be the open unit disc and ∂Ω be its boundary. If $u(x, y)$ is the solution of the following Dirichlet problem
∂ 2 $u$ ∂ 2 $u$
+ = 0
$∂x$ 2 $∂y$ 2
$u(x,$ = $x$ 2 - $y$
1 1 then the value of 4 $(u$ (, 0) - $u$ (0,)) is 2 2
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Q62 nat
Ω . (answer in integer) Let $X$ = {5, 6, 7, 8, 9, 10} be equipped with the topology τ = ${φ, X,$ {5,6,7}, {8,9,10}}. Then the number of subsets of $X$ which are neither open nor closed is. (answer in integer)
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Q63 nat
Let α, β ∈ ℝ. If (4, 0, 2, β) is an optimal solution of the Linear Programming Problem: minimize $x$ 1 + $3x$ 2 + $2x$ 3 - $αx$ 4 subject to $4x$ 1 + $x$ 2 + $x$ 3 = 18 $-3x$ 1 + $2x$ 3 + $x$ 4 = 2 $x$ 1, $x$ 2, $x$ 3, $x$ 4 $\ge$ 0, then the maximum value of 22(α + β) is equal to
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Q64 nat
. (answer in integer) Let $D$ = ${(x, y)$ ∈ ℝ 2 ∶ 0 $\le x \le$ 2, 0 $\le y \le$ 2} and let $f(t)$ denote the smallest integer greater than or equal to $t.$ Then the value of the integral ∬ $f(x$ + $y)dxdy$ $D$ is
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Q65 nat
. (answer in integer) If Jacobi method is used to solve the following system of linear equations 1 2 1 $x$ 1 2 (0 2 2) ($x$ 2) = (2) 1 1 1 $x$ 3 2 $(i) x$ 1 0 (0) $(i)$ with the initial guess $x$ = (0) and $x$ = ($x 2(i)$), $i$ = 1,2,3 …, denotes the $(i)$ 0 $x$ $th$ (2) (2) (2) iterate, then the value of | $x$ + $x$ + $x$ | is equal to $i$. (answer in 3 1 2 3 integer)
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