Question # 1

Choose an answer

I andII quadrants

II andIII quadrants

III andIVquadrants

none of these

The maximum value of Z = 3x+ 4y subjected to the constrains x+ y≤ 40,x+ 2y≤ 60, x≥ 0 and y≥ 0 is

Choose an answer

120

100

140

160

The horizontal distance between the two towers is 60 m. the angular elevation of the top of the taller tower as seen from the top of the shorter one is 30°. If the height of the taller tower is 150 m, the height of the shorter one is

Choose an answer

116 m

200 m

216 m

None of these

Choose an answer

The equation x2+ y2- 8x+ 6y+ 25= 0 represents

Choose an answer

A circle

A pair of straight lines

A point

None of these

If d₁is the distance between (0,0) and (1,2) and d₂is the distance between (0,0) and (2,1) then

Choose an answer

d₁= d₂

d₁<d₂

d_1>d₂

none of these

Ifα,β are non-real roots of ax2 + bx +c =0 (a,b,c∈ Q),then

Choose an answer

α = β

αβ = 1

α = β

α = 1

Choose an answer

all are correct

Choose an answer

One second is denoted by

Choose an answer

1⁰

1'

1"

1 rad

Choose an answer

Cofactor of an element a_ijis defined by

Choose an answer

(-1)^i+j|A|

(-1)^i+jM_ij

(-1)^i+jM^-1

None of these

n different objects can be arranged taken all at a time in ______

Choose an answer

(n + 1)! ways

(n - 1)! ways

n! ways

n ways

Choose an answer

a

2a

3a

4a

Three right angles is the angle of measure

Choose an answer

270°

180°

90°

270'

The unit vector along z-axis is

Choose an answer

none of these

The number of subsets of B = {1,2,3,4,5}

Choose an answer

10

32

16

5

The perimeter of a sector of a central angle of measure 1 radian out off an are of length 35cm is

Choose an answer

35 cm

70 cm

140 cm

105 cm

Which is an explicit function

Choose an answer

y = x²+ 2x - 1

x²+ xy + y²= 2

x²+ y²= xy + 2

All are

Choose an answer

If y=f(x) is a function then x is called

Choose an answer

dependent variable

independent variable

constant

none of these

If C={p/p < 18, p is a prime number}, then C =

Choose an answer

{2,3,4,.........17}

{2,4,6,8................16}

{1,3,5,7,9,11,13,15,17}

{3,6,9,12,15}

A point where two of its boundary lines intersect is called

Choose an answer

Corner point

Feasible point

Vertex

Feasible solution

A circle passing through the vertices of any triangle is called ______

Choose an answer

In circle

Circum circle

Escribed circle

None of these

The central angle of an arc of a circle whose length is equal to the radius of the circle is called one

Choose an answer

Degree

Second

Minute

Radian

Number of permutations of n distinct objects taken r(<n - 3) at a time which exclude 3(<n) particular objects is

Choose an answer

3! P(n, r - 3)

P(n, 3) P(n, r - 3)

P(r, r)P(n, r - 3)

P(n - 3, r)

Choose an answer

0

1

undefined

Choose an answer

4

3

2

1

Range of cos x is ______

Choose an answer

[-1, 1]

R

Negative real numbers

R - { x | - 1 < x < 1}

cos(a +β)-cos(a-β) = _______;

Choose an answer

2cosa cosβ

2sina cosβ

-25 in a cosβ

-2sin a sinβ

The square matrix A is skew Hermitian when (A)'=

Choose an answer

A

A'

-A

A

More Classes

Other Links

ECAT Pre General Science Mathematics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer