ECAT Mathematics Chapter 8 MCQ Test With Answer for Mathematics chapter 8 (Sequences and Series)

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ECAT Computer Science Mathematics Ch. 8 Test
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ECAT Pre Computer Science Subjects

Online MCQ`s Test For Chapter 8 "ECAT Mathematics Chapter 8 Sequences and Series Online Test"

Try The MCQ`s Test For Chapter 8 "ECAT Mathematics Chapter 8 Sequences and Series Online Test"

  • Total Questions30

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ECAT Mathematics Chapter 8 Sequences and Series Online Test

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Question # 1

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

Question # 2

If an= 2n -3, write the first four terms

Question # 3

an - an-1 will be common difference in an A.P if

Question # 4

The harmonic mean between a and b is

Question # 5

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

Question # 6

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

Question # 7

The sum of indicated terms of a sequence is called

Question # 8

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Question # 9

A sequence of number whose reciprocals form an arithmetic sequence is called

Question # 10

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

Question # 11

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

Question # 12

-2, 1, 4, 7,.... is ______

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

The n numbers A1,A2,A3,.....Anare called an arithmetic means between a and b if a.A1,A2,A3.....An, b is ______

Question # 17

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

Question # 18

Sum of first n terms of an arithmetic series is

Question # 19

1/2,1/3,1/4,1/5.........is

Question # 20

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

Question # 21

Which one represents a sequence

Question # 22

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

Question # 23

H.M. between 3 and 7 is

Question # 24

The common ration of a geometric sequence cannot be

Question # 25

Geometric mean between a and b is

Question # 26

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

Question # 27

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Question # 28

Sequence also called..............

Question # 29

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

Question # 30

For an arithmetic series to be convergent it is necessary that the series has

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