Question # 1

The middle terms of (x+y)²³ are:

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T₁₀,T₁₁

T₁₁,T₁₂

T₁₂,T₁₃

none of these

If n(S) = 3 then n {P(S)} =

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2

8

16

4

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30°

45°

60°

75°

Factors of x² + y² are:

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(x + iy) (x - iy)

(x + y) (x - y)

(x + y) (x + y)

none

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4

6

8

10

The domain of principal sine function is:

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cos^-1 (-x) =

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π + cos^-1 x

π - cos^-1x

π + sin^-1x

π - sin^-1x

The probability that a number selected from the numbers 1, 2, 3, 4, 5, ......, 16 is a prime number is:

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If A is a matrix of order m × n and B is a matrix of order n × p then the order of AB is:

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p×m

p×n

n×p

m×p

Minors and co-factors of the elements in a determinant are equal in magnitude but they may differ in:

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order

position

sign

symmetry

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3×2

2×3

2×2

3×3

For what value of k, the roots of the equation x² + √k x + 2 = 0 are equal:

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1

8

2

4

2 sin α cos ß =

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sin (α + ß) - sin (α - ß)

cos (α + ß) + cos (α - ß)

sin (α + ß) + sin (α - ß)

cos (α + ß) - cos (α - ß)

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A and B are power sets

A and B are disjoint sets

A and B are super sets

A and B are equal sets

The identity element with respect to addition is:

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0

1

-1

0 and 1

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2

-2

5

-5

How many different number can be formed by taking 4 out of the six digits 1, 2, 3, 4, 5, 6:

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360

120

366

none of these

B - A is a subset of:

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A

B

If A and B are two matrices, then:

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A B = O

AB = BA

AB = I

AB may not be defined

cos(tan^-1∞) =

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0

∞

1

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