Question # 1

A Geometric Series is divergent only if

Choose an answer

|r|>1

|r|≥1

|r|=1

None of these

Choose an answer

15/23

7/15

7/8

15/7

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

Choose an answer

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

Choose an answer

n, a, b

n, a

n, b

n

Choose an answer

1/2

2

1/4

4

For three consecutive terms in A.P middle term is called

Choose an answer

A.M

nth term

Central term

None of these

If a, b, c, d, e, f are in A.P.,then e-c is equal to

Choose an answer

2(c - a)

2(f - d)

2(d - c)

d - c

Write the first four terms of the sequence if a_n= (-1)ⁿn²

Choose an answer

-1, 4, -9, 16

1, -4, 9, 16

1, 4, 9, 16

None of these

The harmonic mean between a and b is

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

The third term of the sequence a_n= (-1)^n-1(n-7) is ______

Choose an answer

8

4

-4

8

Choose an answer

1, 1/2, 0

1, 2, 1

1, 2, 3

1, 2, 0

The nth term of an A.P., is 12-4n. Its common difference is

Choose an answer

8

4

16

If 5,7 and 9 are A.Ms between a and b, then a and b is equal to

Choose an answer

2 and 12

1 and 10

3 and 11

-7 and 2

Arithmetic mean between x - 3 and x + 5 is

Choose an answer

x + 1

x + 2

x + 3

x + 4

The formula an = arn-1represents

Choose an answer

nth term of G.P

Sum of the first n terms

G.M between a and b

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

Choose an answer

Sum of first n terms of an arithmetic series is

Choose an answer

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

The next term of the sequence 1, 2, 4, 7, 11, ..... is.

Choose an answer

15

16

17

18

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

Choose an answer

A.P.

G.P.

H.P.

None of these

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

Choose an answer

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

Choose an answer

136

-136

148

-148

The series obtained by adding the terms of an arithmetic sequence is called the

Choose an answer

Infinite series

Harmonic series

Geometric series

Arithmetic series

The 6th term of an arithmetic sequence whose first term is 3 and common difference in zero is

Choose an answer

18

6

3

0

A sequence is a functions whose domain is a subset of the set of

Choose an answer

Natural numbers

Real numbers

Whole numbers

Rational numbers

A number H is said to be the H.M. between a and b if a, H, b are in

Choose an answer

A.P.

G. P.

H. P.

None of these

If all members of a sequence are real numbers then it is called a

Choose an answer

Series

Function

Real sequence

Range

If P, Q, R be the A.M., G.M., H.M. respectively between any two rational numbers a and b, then P - Q is

Choose an answer

2

-3/2

1

0

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

Choose an answer