ECAT Pre Engineering MCQ Test With Answer for Chapter 8 Mathematics

MCQ's Test For ECAT Mathematics Chapter 8 Sequences and Series

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ECAT Mathematics Chapter 8 Sequences and Series

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Question # 1

An indicated sum of terms of a sequence is represented by

Question # 2

No term of a harmonic sequence can be

Question # 3

H.M. between 3 and 7 is

Question # 4

The nth term of an A.P is (3n+5) Its 75th term is

Question # 5

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

Question # 6

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

Question # 7

The 6th term of the sequence 7,9,12,16......is

Question # 8

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

Question # 9

The third term of a G.P. is the square of first term. If the second term is 8, then the 6th term is

Question # 10

99th term of the series 2 + 7 + 14 + 23 + 34 + ..... is

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

The element range of sequence are called

Question # 16

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

Question # 17

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

Question # 18

Geometric mean between a and b is

Question # 19

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

Question # 20

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

Question # 21

The series obtained by adding the terms of a geometric sequence is called

Question # 22

How many term are there in the A.P, in which a1 = 11 , an =68, d=3

Question # 23

If Srdenotes the sum of the first r terms of a G.P., then Sn, S2n- Sn, S3n- S2nare in

Question # 24

If a1= 3, r = 2, then the nth term of the G.P. is

Question # 25

The sum of n terms of a series is denoted by

Question # 26

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

Question # 27

The 31 term of the A.P 5,2,-1.....is

Question # 28

Which term of the A.P 5,8,11,24.............is 320

Question # 29

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

Question # 30

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

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ECAT Mathematics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Find the geometric mean between 4 and 16
2
Question Image
A. 1, 1/2, 0
B. 1, 2, 1
C. 1, 2, 3
D. 1, 2, 0
3 The element range of sequence are called
A. Series
B. progression
C. Members
D. Terms
4 A sequence of number whose reciprocals form an arithmetic sequence is called
A. Geometric sequence
B. Arithmetic series
C. Harmonic sequence
D. Harmonic series
5 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
6 An A.P. consists of n(odd terms) and its middle term is m. then the sum of the A.P. is
A. 2 mn
B. 1/2 mn
C. mn
D. mn2
7 The series obtained by adding the terms of a geometric sequence is called
A. Infinite series
B. Arithmetic series
C. Geometric series
D. Harmonic series
8 if a1 =3, d=7 and an =59 , then the number of terms in A.P is
A. 7
B. 9
C. 11
D. 13
9
Question Image
A. 12
B. 13
C. 14
D. 15
10 The difference of two consecutive terms of an A.P is called the
A. Common difference
B. Common ratio
C. Geometric series
D. Geometric mean

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