Question # 1

{2, 4, 6, 8, ...........} represents the set of:

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positive odd numbers

natural numbers

prime numbers

positive even numbers

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

Sequences are also called:

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Series

Progressions

Means

Convergence

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The set of negative integers is closed with respect to:

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addition

multiplication

both (a) and (b)

subtraction

When two sides and included angle is given, then area of triangle is given by:

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all of these

A compound statement of the form "if p then q" is called an:

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tautology

conditional

consequent

absurdity

One of the roots of the equation 3x2 + 2x + k = 0 is the reciprocal of the other, then k = ...............:

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3

2

1

4

2 cos α sin ß =

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cos (α + ß) + cos (α - ß)

sin (α + ß) + sin (α - ß)

sin (α + ß) - sin (α - ß)

cos (α + ß) + cos (α - ß)

Arithmetic series is only possible if:

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|d| = 1

|d| < 1

|d| > 1

none

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ab - cd = 0

ac - bd = 0

ad - bc = 1

ad - bc = 0

The roots of the equation:

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complex

irrational

rational

none of these

If the roots of x² - bx + c = 0 are two consecutive integers, then: b² - 4ac =

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0

1

-1

2

The trivial solution of the homogeneous linear equations is:

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(1, 0, 0)

(0, 1, 0)

(0, 0, 1)

(0, 0, 0)

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

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A statement which is true for all possible values of the variables involved in it, is called a:

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tautology

conditional

implication

absurdity

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25

20

40

2a + 2b + 2c

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

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2

8

16

4

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

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1

n

n!

none

In a triangle if α > 45°, ß > 30° then Γ cannot be:

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90°

100°

120°

10°

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11th Class ICS Mathematics Test Online MCQs With Answers

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