Question # 1

Two natural numbers whose sum is 25 and difference is 5, are

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25, 20

20, 10

20, 5

15, 10

The principal value of sin^-1 [√3/2] is

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π/3

-π/3

2π/3

5π/3

If f(x) = x³- 2x² +4x-1, then f(-2) =?

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0

-25

5

45

Unit vector in the positive direction of x-axis is

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î

ĵ

k̂

All

The gradient of the line joining (1,4) and (-2,5) is

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3/8

-2 2/3

-1/3

2

The conic is a parabola if

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e <1

e > 1

e = 1

e = 0

Sin^-1 x =?

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π/2- Sin^-1 x

π/2 -Cos^-1 x

-Sin^-1 x

-Cos^-1 x

Sin^-1 (-x) =?

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Sin^-1 x

-Sin^-1 x

Cos^-1 x

-Cos^-1 x

Sin^-1 √3/2 =?

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2π/3

π/2

π/3

v/5

If A and B are matrices such that AB=BA=I then

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A and B are multiplicative inverse of each other

A and B are additive inverses of each other

A and B are singular matrices

A and B are equal

Sin-1 (√2/2)=?

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π/2

π/3

3π/4

2π

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