Question # 1

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

Choose an answer

1500

72

2160

2520

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

Choose an answer

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

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

Choose an answer

8

4

16

Choose an answer

2

-3/2

1

0

5th term of a G.P. is 2, then the product of first 9 terms is

Choose an answer

256

128

512

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 b₁, b₂, b₃, ... are in G.P. with first term unity and common ratio r, then the minimum value of b₁- b₃+ b₅is equal to

Choose an answer

3/4

1/4

1

None of these

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

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

Choose an answer

18, 20

19, 22

20, 25

21, 27

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

Choose an answer

G.P

H.P

G.M

None of these

An indicated sum of terms of a sequence is represented by

Choose an answer

Sn

an

S(n)

{Sn}

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

Choose an answer

136

-136

148

-148

Choose an answer

An infinite sequence has no

Choose an answer

nth term

Last term

Sum

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 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

pth term of an H.P. is qr and qth term is pr then the rth term of the H.P. is

Choose an answer

pqr

1

pq

pqr²

Choose an answer

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

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

Choose an answer

Identity function

Sequence

Onto function

Series

The formula an = a +(n-1)d for an A.P is called

Choose an answer

nth term of an A.P

Sum of first n terms

A,M between a and b

None of the above

Choose an answer

0

1

2

3

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

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

Choose an answer

geometric sequence

finite sequence

infinite sequence

arithmetic series

Find the geometric mean between 4 and 16

Choose an answer

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

Choose an answer

8

4

-4

8

Let a₁, a₂, a₃, a₄and a₅be such that a₁, a₂, and a₃are in A.P., a₂, a₃and a₄are in G.P and a₃, a₄and a₅are in H.P. Then, a₁, a₃and a₅are in

Choose an answer

G.P.

A.P.

H.P.

None of these

A Geometric Series is divergent only if

Choose an answer

|r|>1

|r|≥1

|r|=1

None of these

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 harmonic mean between a and b is

More Classes

Other Links

ECAT 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