Question # 1

Arithmetic mean between a and b is

Choose an answer

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

How many numbers are there between 103 and 750 which are divisible by 6

Choose an answer

125

107

108

113

If a, b, c are in A.P., then 3^a, 3^b, 3^care in

Choose an answer

A.P.

G.P.

H.P.

None of these

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

Choose an answer

geometric sequence

finite sequence

infinite sequence

arithmetic series

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

Choose an answer

3.5

3

4

None of these

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 whose reciprocal is an A.P is called

Choose an answer

Oscillator

H.P

G.P

None of these

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

Choose an answer

3

-4

7

1

The sides of a right angled triangle are in A.P The ratio of sides is

Choose an answer

1:2:3

3:4:5

2:3:4

5:8:3

A function whose domain is a subset of natural numbers is called ______

Choose an answer

Identity function

Sequence

Onto function

Series

The harmonic mean between a and b is

Choose an answer

The sum of n terms of a series is denoted by

Choose an answer

d

n

S_n

a_n

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

G is geometric mean between a and b if a, G, b is

Choose an answer

A.P.

G.P.

H.P.

None of these

If a₁, r are first term and the common ratio respectively then the sum of an infinite geometric 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

3, 6, 12,.... is

Choose an answer

A.P

G.P.

H.P.

None of these

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

Choose an answer

191

193

211

None of these

Find the geometric mean between 4 and 16

Choose an answer

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 is such that a,A,B are in A.P then A is called

Choose an answer

A.M

Common ratio

Common difference

None of these

If a, b, c are in AP., a, b, c are in G.P. then A, m²b, c are in

Choose an answer

A.P.

G.P.

H.P.

None of these

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 fifth term of an A.P. Whose first term is 5 and common difference is 3,is

Choose an answer

20

17

25

30

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

Choose an answer

18, 20

19, 22

20, 25

21, 27

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

Choose an answer

A.M

A.P

G.P

G.M

The seventh term of an A.P whose first term is P and common difference is q. is

Choose an answer

P-6q

P+6q

P-4q

P-nq

Choose an answer

15/23

7/15

7/8

15/7

No term of a geometric sequence can be

Choose an answer

0

1

2

3

If 6th term of a series in A.P, is -2 and 8th term is -8, the first term of the serie is

Choose an answer

13

-13

18

-10

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

Choose an answer

15

16

17

18

The sixth term of the sequence 1,3,12,60....is

Choose an answer

1500

72

2160

2520

The general term of a sequence is denoted by

Choose an answer

a₁

a_n

n

s_n

If x,y are two positive distinct numbers then

Choose an answer

A>G>H

A<G<H

A=G=H

None of these

The fifth term of the sequence a_n= 2n + 3 is ______

Choose an answer

13

-13

8

3

No term of a harmonic sequence can be

Choose an answer

0

1

2

3

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

Choose an answer

Common difference

Common ratio

Geometric series

Geometric mean