Question # 1

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

Choose an answer

The A.M. of two numbers is 34 and G.M. is 16, the numbers are

Choose an answer

2 and 64

64 and 3

64 and 4

None of these

The sum of the squares of three distinct real numbers, which are in G.P., is S². if their sum isαS then

Choose an answer

The 10th common term between the series 3+7+11+....... and 1 + 6 +11 + ....... is

Choose an answer

191

193

211

None of these

The5thand 13th terms of an A.P are 5 and-3 respectively The first term of the A.P is

Choose an answer

1

-15

9

2

The numbers of G₁, G₂, G₃...... G_nare called n geometric means between a and b is a, G₁, G_2,G₃, ... G_n, b are in

Choose an answer

H.P.

A.P.

G.P.

None of these

An A.P. consists of n(odd terms) and its middle term is m. then the sum of the A.P. is

Choose an answer

2 mn

1/2 mn

mn

mn²

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

Choose an answer

n, a, b

n, a

n, b

n

The 7th term of the A.P 7,11,15,is

Choose an answer

24

31

26

23

Choose an answer

The sum of an indicated number of terms in a sequence is called

Choose an answer

sequence

progression

Series

Mean

p, q, r and s are integers. If the A.M. of the roots of x2- px + q2= 0 and G.M. of the roots of x2- rx + s2= 0 are equal, then

Choose an answer

q is an odd integer

r is an even integer

p is an even integer

s is an odd integer

Write the first four terms of the arithmetic sequence 5, 2, -1, ... is

Choose an answer

3

-4

7

1

What is the 26th term of the sequence, if its general term is a_{n = (-1)}ⁿ⁺¹

Choose an answer

2

26

27

1

A sequence having no last term is called

Choose an answer

arithmetic sequence

Geometric sequence

Finite sequence

Infinite sequence

Choose an answer

0

1

2

3

Find the sum of the infinite geometric series 2 + 1 + 0.5 + ....

Choose an answer

3.5

3

4

None of these

A series consisting of an unlimited number of terms is termed as an

Choose an answer

Finite sequence

Infinite sequence

^{Infinite series}

geometric sequence

If a₁, r and a_nare the first term, common ratio and the nth term respectively of a G. P. then a_n=

Choose an answer

a₁rⁿ

a₁r^n-1

a₁rⁿ⁺¹

a₁r

In an A.P,a +(n-a)d is

Choose an answer

1st term

General term

Last term

None of these

If a₁and r are the first term and the common ratio respectively then (n + 1)th term of the G.P. is

Choose an answer

0

a₁r^n-1

a₁rⁿ⁺¹

a₁rⁿ

The three consecutive numbers a,√ab,b are in

Choose an answer

G.P

H.P

G.M

None of these

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

Choose an answer

If a,b,c are in arithmetic progression, then 1/a,1/b.1/c are in

Choose an answer

A.M

G.M

H.M

G.P

1,1/3,1/5,1/7,1/9..... is a

Choose an answer

geometric sequence

finite sequence

infinite sequence

arithmetic series

If a₁= a₂= 2, a_n= a_n-1- 1 (n > 2), then a₅is

Choose an answer

1

0

-1

-2

The sum of an infinite geometric series exist if

Choose an answer

| r | < 1

| r | > 1

r = 1

r = -1

If A, G, H are the arithmetic, geometric and harmonic means between a and b respectively then A, G, H are in

Choose an answer

A. P.

G. P.

H. P.

None of these

No term of a geometric sequence can be

Choose an answer

0

1

2

3

More Classes

Other Links

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

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer