Question # 1

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integer

rationalnumber

irrationalnumber

naturalnumber

If each element in any row or each element in any column of a square matrix is zero, then value of the determinant is:

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0

1

-1

none of these

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

What is the common difference of the sequence 11, 5, -1, ......... ?

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6

-6

none of the foregoing numbers

Two matrices X and Y are equal if and only if:

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X and Y are of same order

Their corresponding elements are equal

Both a and b

None of these

Number of ways of arranging 5 keys in a circular ring is:

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12

24

6

5

Complex roots of real quadratic equation always occur in:

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conjugate pair

ordered pair

reciprocal pair

none of these

r₃ =

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The period of sin 2x is:

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π

2π

3π

If α, ß are the roots of x² + kx + 12=0 such that α-ß = 1 then K = :

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0

±5

±7

±15

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2x

x²

1

none of these

cos (2sin^-1 x) =

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1- 2x²

1 + 2x²

2x²- 1

x²- 1

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5

-5

-4

4

The other name of quadratic equation is:

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linear equation

1st degree equation

2nd degree equation

none

tan (-135°) =

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0

1

√2

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The period of tan 2x is:

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A dice is thrown. The probability to get an even number is:

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1

none of these

If ⁿP₂ = 30 then n = :

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5

6

2

3

A die is rolled. The probability that the dots on the top are greater than 4 is:

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5, 6

1

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