Question # 1

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If a_n = (n + 1) a_n-1, a₁ = 1, second term of the sequence is:

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3

1

2

4

Number of terms in the expansion of (a+b)ⁿ is:

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n

n+1

n-1

none of these

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In triangle the length of the sides are 7, 4√3 and √13. Then the smallest angle is:

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15°

30°

60°

45°

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1 radian is equal to:

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180°

none of these

For what value of k, the sum of the roots of the equation x² + kx + 4 = 0 is equal to the product of its roots:

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±1

4

±4

-4

A declarative statement which is either true or false but not both is called:

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logic

proposition

induction

deduction

What is called the difference between two consecutive terms of an arithmetic sequence ?

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common ratio

common difference

common element

none of these

Four fourth roots of 625 are:

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±5,±5i

±5,±25i

±25,±25i

none of these

If 2s = a + b + c, where a, b, c are the sides of a triangle ABC, then area of triangle ABC is given by:

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A set can be described by:

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one way

two ways

several ways

threeways

If S is the H.M between 2 and b then b = :

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-10

10

7

5

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

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24

48

12

6

The other name of quadratic equation is:

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linear equation

1st degree equation

2nd degree equation

none

If A is a square matrix, then:

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|A^t| = A

|A^t| = -A

|A^t| = |A|

A^t= A

To convert any angle in radians into degrees, we multiply the measure by:

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x-axis

y-axis

y = x

y = -x

In circular system the angle is measured in:

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radians

degrees

degrees, minutes

degrees, seconds

The set of negative integers is closed with respect to:

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addition

multiplication

both (a) and (b)

subtraction

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11th Class ICS Mathematics Test Online MCQs With Answers

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