Question # 1

Probability of a certain event is:

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0

1

>1

∞

If the matrices A & B have the orders 2×3 and 5×2 then order BA is:

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3×5

5×2

2×2

none

No. of selection of n different things out of n is:

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1

n

n!

none

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Rational numbers are:

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repeating decimals

terminatingdecimals

periodicdecimals

all of these

A.M between 1 + x - x² and 1 + x + x² is:

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1 + x²

1 + x

2

none

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A

B

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1

-5

-1

none

The middle term of (x-y)¹⁸ is:

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9th

10th

11th

none of these

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40

-40

26

-26

If there are six G.Ms between 3 and 284 then G₄ =

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24

48

12

6

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn bears a number which is a multiple of 3 ?

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none of these

The real part of the complex number a + bi is:

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b

-b

a

-a

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 the elevation of the sun is 30°, the length of the shadow cast by a tower of 150m height is:

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none

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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If 2s = a + b +c, then in any triangle ABC:

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none of these

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scalar matrix

diagonalmatrix

lower triangularmatrix

upper triangularmatrix

If n is a positive integer, then the binomial co-efficient equidistant form the beginning and the end in the expansion of (x+a)ⁿ are:

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same

not same

additive inverse of each other

none of these

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