ECAT Mathematics Chapter 8 online mcq test with answers for chapter 8 (Sequences and Series)

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ECAT Mathematics Chapter 8 Important MCQ's

Sr.#	Question	Answer
1	pth term of an H.P. is qr and qth term is pr then the rth term of the H.P. is	A. pqr B. 1 C. pq D. pqr²
2	The number of divisors of 1029, 1547 and 122 are in	A. A.P. B. G.P. C. H.P. D. None of these
3	The 7th term of the A.P 7,11,15,is	A. 24 B. 31 C. 26 D. 23
4	The sum of first 60 natural numbers is	A. 1830 B. 3660 C. 1640 D. 1770
5	G is geometric mean between a and b if a, G, b is	A. A.P. B. G.P. C. H.P. D. None of these
6	Let the sequence 1, 2, 2, 4, 4, 4, 4, 8, 8, 8, 8, 8, 8, 8, 8, ..... where n consecutive terms have the value n, then 1025th term is	A. 2⁹ B. 2¹⁰ C. 2¹¹ D. 2⁸
7	If a,b,c are in arithmetic progression, then 1/a,1/b.1/c are in	A. A.M B. G.M C. H.M D. G.P
8		A. 0 B. 1 C. 2 D. 3
9	The n numbers A₁,A₂,A₃,.....A_nare called an arithmetic means between a and b if a.A₁,A₂,A₃.....A_n, b is ______	A. An arithmetic series B. An arithmetic sequence C. A geometric sequence D. A harmonic sequence
10	If the pth, qth, and rth terms of an A.P. are in G.P:., then the common ratio of the G.P. is

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ECAT Pre Engineering Mathematic MCQ Test With Answer for Chapter 8 (Sequences and Series)

MCQ's Test For ECAT (Pre-Eng) Mathematics Chapter 8 Sequences and Series

ECAT (Pre-Eng) Mathematics Chapter 8 Sequences and Series

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

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

An indicated sum of terms of a sequence is represented by

The element range of sequence are called

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

A sequence is a functions whose domain is a subset of the set of

The sum of the squares of three distinct real numbers, which are in G.P., is S2. if their sum isαS then

Sum of n terms of a geometric series if | r | < 1 is

An infinite arithmetic series is always

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

If p, q, r and in A.P., a is G.M. between p and q and b is G.M. between q and r, then a2, q2, b2are in

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

The sum of first twenty odd integers in A.P is

an -an-1,∀n∈N∧n>1 in an A.P is called

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

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

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

The harmonic mean between a and b is

if a9 =19,a9=31 are the 6th and 9th term of an A.P. and d=4 is the common difference, then 18th term of the sequence is

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

If all members of a sequence are real numbers then it is called

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

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

The series obtained by adding the terms of an arithmetic sequence is called the

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

A series consisting of an unlimited number of terms is termed as an

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

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

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

Arithmetic mean between x - 3 and x + 5 is

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ECAT Mathematics Chapter 8 Important MCQ's

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The sum of the squares of three distinct real numbers, which are in G.P., is S². if their sum isαS then

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

If p, q, r and in A.P., a is G.M. between p and q and b is G.M. between q and r, then a², q², b²are in

if a_{9 =19,a9=31 are the 6th and 9th term of an A.P. and d=4 is the common difference, then 18th term of the sequence is}