Question:

If 3 + 5 – 8 = 0, then the value of (3)3 + (5)3 – (8)3is

A.

260

B.

–360

C.

–160

D.

160

Answer» b. –360

Question:

Transpose of a column matrix is

A.

zero matrix

B.

diagonal matrix

C.

column matrix

D.

row matrix

Answer» d. row matrix

Question:

Identify the polynomial

A.

x–2 + x–1 + 5

B.

D.

3×2 + 7

Answer» d. 3×2 + 7

Question:

A negative definite Hessian fulfils the second order conditions for

A.

maximum

B.

minimum

C.

both maximum and minimum

D.

minimax

Answer» a. maximum

Question:

Two variables x and y if involved in linear equation then the equation is

A.

ax+by = c

B.

ab+xy = c

C.

ac+bx = y

D.

ax+bc = y

Answer» a. ax+by = c

Question:

224.……………. is known as a signed minor

A.

rank

B.

cofactor

C.

inverse

D.

none

Answer» c. inverse

Question:

If a set has n elements, the total number of subsets will be

A.

2n

B.

2n

C.

2/n

D.

none of these

Answer» a. 2n

Question:

If A and B are square matrices such that AB = BA, then A and B are called…………..

A.

additive

B.

multiplicative

C.

divisive

D.

commutative

Answer» d. commutative

Question:

If all the sets under consideration are subsets of a fixed set say ∪, then this set ∪ is called

A.

universal set

B.

power set

C.

disjoint set

D.

finite set

Answer» a. universal set

Question:

If x + 2 is a factor of x3 – 2ax2 + 16, then value of a is

A.

3

B.

1

C.

4

D.

2

Answer» b. 1