More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
ECAT Pre General Science Mathematics Chapter 8 Sequences and Series Online Test MCQs With Answers
Question # 1
Choose an answer
Previous
Skip
Next
Question # 2
Find the next two terms of 7, 9, 12, 16,...
Choose an answer
18, 20
19, 22
20, 25
21, 27
Previous
Skip
Next
Question # 3
How many numbers are there between 103 and 750 which are divisible by 6
Choose an answer
125
107
108
113
Previous
Skip
Next
Question # 4
Choose an answer
A.P.
G.P.
H.P.
None of these
Previous
Skip
Next
Question # 5
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
Previous
Skip
Next
Question # 6
Write the first four terms of the sequence if a
n
= (-1)
n
n
2
Choose an answer
-1, 4, -9, 16
1, -4, 9, 16
1, 4, 9, 16
None of these
Previous
Skip
Next
Question # 7
If a
1
= 3, r = 2, then the nth term of the G.P. is
Choose an answer
2.3
n-1
3.2
n
3.2
n+1
3.2
n-1
Previous
Skip
Next
Question # 8
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
Previous
Skip
Next
Question # 9
The element range of sequence are called
Choose an answer
Series
progression
Members
Terms
Previous
Skip
Next
Question # 10
The three consecutive numbers a,√ab,b are in
Choose an answer
G.P
H.P
G.M
None of these
Previous
Skip
Next
Question # 11
For an A.P common difference d
Choose an answer
Can be zero
May or may not zero
Cannot be zero
None of these
Previous
Skip
Next
Question # 12
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
Previous
Skip
Next
Question # 13
The nth term of an A.P is (3n+5) Its 75th term is
Choose an answer
26
7
21
Cannot be determined
Previous
Skip
Next
Question # 14
Every term of a G.P. is positive and also every term is the sum of two preceding terms. Then the common ratio of the G.P. is
Choose an answer
Previous
Skip
Next
Question # 15
The sum of first twenty odd integers in A.P is
Choose an answer
400
397
404
408
Previous
Skip
Next
Question # 16
A Series which does not coverage to a Unique sum is called
Choose an answer
Harmonic Series
Oscillatroy Series
Arithmetic Series
None of these
Previous
Skip
Next
Question # 17
Choose an answer
15/23
7/15
7/8
15/7
Previous
Skip
Next
Question # 18
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
Previous
Skip
Next
Question # 19
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
Previous
Skip
Next
Question # 20
Choose an answer
Previous
Skip
Next
Question # 21
The sum of an infinite geometric series exist if
Choose an answer
| r | < 1
| r | > 1
r = 1
r = -1
Previous
Skip
Next
Question # 22
Choose an answer
Previous
Skip
Next
Question # 23
The third term of the sequence a
n
= (-1)
n-1
(n-7) is ______
Choose an answer
8
4
-4
8
Previous
Skip
Next
Question # 24
1,1/3,1/5,1/7,1/9..... is a
Choose an answer
geometric sequence
finite sequence
infinite sequence
arithmetic series
Previous
Skip
Next
Question # 25
The series obtained by adding the terms of a geometric sequence is called
Choose an answer
Infinite series
Arithmetic series
Geometric series
Harmonic series
Previous
Skip
Next
Question # 26
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
mn
2
Previous
Skip
Next
Question # 27
If #n = (n-5)2 + 5, then find #3 x #4.
Choose an answer
54
12
4
9
Previous
Skip
Next
Question # 28
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
Previous
Skip
Next
Question # 29
The general term of the A.P. is
Choose an answer
a
1
+ (n - 1) d
n + (a
1
- 1) d
d + (n - 1) a
1
None of these
Previous
Skip
Next
Question # 30
The harmonic mean between a and b is
Choose an answer
Previous
Skip
Next
Question # 31
The sum of all 2 digit number is
Choose an answer
4750
3776
4895
4905
Previous
Skip
Next
Back