Mathematics GATE CS and IT previous year questions with Answer


Ques 41 Gate 2015 Set-3


A function f(x) is linear and has a value of 29 at x = –2 and 39 at x = 3. Find its value at x = 5.

A

59

B

45

C

43

D

35



Ques 42 GATE 2015 SET-3


Let R be a relation on the set of ordered pairs of positive integers such that ((p, q), (r, s)) ∈ R if and only if p - s = q - r. Which one of the following is TRUE about R?

A

Both symmetric and antisymmetric

B

Antisymmetric but not symmetric

C

Symmetric but not antisymmetric

D

Neither symmetric nor antisymmetric



Ques 43 Gate 2015 Set-2


The number of divisors of 2100 is _________.


a is the correct answer.


Ques 44 Gate 2015 Set-2


Consider a function f(x) = 1 – |x| on –1 ≤ x ≤ 1. The value of x at which the function attains a maximum and the maximum value of the function are:

A

0, –1

B

–1, 0

C

0, 1

D

–1, 2



Ques 45 GATE 2015 SET-2


The cardinality of the power set of {0, 1, 2,..., 10} is _______.



Ques 46 GATE 2015 SET-2


The larger of the two eigenvalues of the matrix

is _______.



Ques 47 GATE 2015 SET-2


In a triangle PQR, PS is the angle bisector of ∠QPR and ∠QPS = 60°. What is the length of PS?

A

(q + r) / qr

B

qr / (q + r)

C

√(q2 + r2)

D

(q + r)2 / qr



Ques 48 GATE 2015 SET-2


Let f(x) = x-(1/3) and A denote the area of the region bounded by f(x) and the X-axis, when x varies from -1 to 1. Which of the following statements is/are TRUE?
I) f is continuous in [-1, 1]
II) f is not bounded in [-1, 1]
III) A is nonzero and finite

A

II only

B

III only

C

II and III only

D

I, II and III



Ques 49 GATE 2015 SET-2


Perform the following operations on the matrix

(i) Add the third row to the second row.
(ii) Subtract the third column from the first column.
The determinant of the resultant matrix is _______.



Ques 50 GATE 2015 SET-2


The number of onto functions (surjective functions) from set X = {1, 2, 3, 4} to set Y = {a, b, c} is _______.