Question # 1

The values of n such that, in the binomial expansion of (1 - x)ⁿ, co-efficient of x², co-efficient of x²is 3, are

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-2, -3

2, -3

-2, 3

None of these

The multiplicative inverse of x such that x = 0 is

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-x

does not exist

1/x

0

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

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25, 20

20, 10

20, 5

15, 10

A die is thrown. What is the probability that there is a prime number on the top?

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1/2

1/3

1/6

2/3

The number ways in which 5 distinct toys can be distributed among 3 children is

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3⁵

5³

C₃⁵

P₃⁵

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The equation of the line with gradient 1 passing through the point (h, k) is

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Y = x + k - h

Y = k/h x + 1

Y = x + h - k

Ky = hx - 1

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An equation

Linear equation

Rational fraction

Identity

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

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3/8

-2 2/3

-1/3

2

Complex roots of real quadratic equation occur in

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Conjugate pair

ordered pair

reciprocal pair

quadratic function

The multiplicative inverse of -1 in the set {1-, 1} is

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1

-1

+1

0

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