Question:

The value of

A.

300

B.

500

C.

400

D.

600

Answer» b. 500

Question:

The curve of a linear equation is…………….

A.

parabola

B.

a liner

C.

hyper-parabola

D.

none of the above

Answer» b. a liner

Question:

If one of the factor of x2 + x – 20 is (x + 5). Find the other

A.

x – 4

B.

x + 2

C.

x + 4

D.

x – 5

Answer» a. x – 4

Question:

What are the gradient and the determinant of the Hessian of the function f(x, y ) = x2 y 2 at its global optimum?

A.

∇f = 0i + 0j and h > 0

B.

∇f = 0i + 0j and h = 0

C.

∇f = 1i +1j and h < 0

D.

∇f = 1i +1j and h = 0

Answer» a. ∇f = 0i + 0j and h > 0

Question:

In a quadratic equation ax2+bx+c=0, sum of roots: α+β =

A.

–

B.

C.

–

Answer» a. –

Question:

The set B of odd positive integers less than 10 can be expressed by _____________

A.

{1, 2, 3}

B.

{1, 3, 5, 7, 9}

C.

{1, 2, 5, 9}

D.

{1, 5, 7, 9, 11}

Answer» b. {1, 3, 5, 7, 9}

Question:

A diagonal matrix with all its diagonal elements equal to 1 is known as:

A.

triangular matrix

B.

zero matrix

C.

identity matrix

D.

none

Answer» c. identity matrix

Question:

The value of 5.63 × 5.63 + 11.26 × 2.37 + 2.37 × 2.37 is

A.

237

B.

126

C.

56

D.

64

Answer» d. 64

Question:

Variables of linear equation is implicitly raised to

A.

first power

B.

second power

C.

third power

D.

four power

Answer» a. first power

Question:

If x + y = 3, x2 + y2 = 5 then xy is

A.

1

B.

3

C.

2

D.

5

Answer» c. 2