Question # 1

If x,y are two -ve distinct numbers then

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A>G>H

A<G<H

A=G=H

None of these

1/2,1/3,1/4,1/5.........is

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a geometric sec

an arithmetric series

finite sequence

an infinite sequece

Find the geometric mean between 4 and 16

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Find the next two terms of 7, 9, 12, 16,...

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18, 20

19, 22

20, 25

21, 27

If three unequal numbers p, q, r are in H.P. and their squares are in A.P., then the ration p : q : r is

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1 + 2 + 3 + ...... + n = ______

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The difference of two consecutive terms of an A.P is called the

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Common difference

Common ratio

Geometric series

Geometric mean

The sum of infinite numbers of terms of an arithmetic series is

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Finite

Infinite

May or may not finite

None of these

Given two numbers a and b. Let A denote the single A.M. between these and S denote the sum of n A.M.'s between them. Then S/A depends upon

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n, a, b

n, a

n, b

n

The 26th term of the A.P -2,-4,10,.............is

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136

-136

148

-148

Geometric mean between a and b is

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An A.P., a G.P. and a H.P. have the same first and last terms and the same odd numbers of terms, the middle terms of the three series are in

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A.P.

G.P.

H.P.

None of these

In following question, a number series is given with one term missing. choose the correct alternative that will same pattern and fill in the blank spaces.1 , 4, 9, 16, 25, x

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35

36

48

49

For an A.P common difference d

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Can be zero

May or may not zero

Cannot be zero

None of these

If the pth, qth, and rth terms of an A.P. are in G.P:., then the common ratio of the G.P. is

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3, 6, 12,.... is

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A.P

G.P.

H.P.

None of these

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None of these

If p, q, r and in A.P., a is G.M. between p and q and b is G.M. between q and r, then a², q², b²are in

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A.P.

G.P.

H.P.

None of these

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The consecutive terms of a progressions are 30, 24, 20. The next term of the progression is

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Mathematics ECAT Pre Engineering Chapter 8 Sequences and Series Online Test MCQs With Answers

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