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	If all members of a sequence are real numbers then it is called	A. A.P B. Real Sequence C. G.P D. None of these
2	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
3	If a, b, c, d, e, f are in A.P.,then e-c is equal to	A. 2(c - a) B. 2(f - d) C. 2(d - c) D. d - c
4	A number A is called the arithmetic mean between a and b if a, A, b is ______	A. Arithmetic sequence B. Geometric sequence C. Harmonic sequence D. Arithmetic sequence
5	The series obtained by adding the terms of an arithmetic sequence is called the	A. Infinite series B. Harmonic series C. Geometric series D. Arithmetic series
6		A. 12 B. 13 C. 14 D. 15
7	If G is a G.M between a and b then a,G,b are in	A. A.P B. H.P C. G.P D. None of these
8	The5thand 13th terms of an A.P are 5 and-3 respectively The first term of the A.P is	A. 1 B. -15 C. 9 D. 2
9	If Sn is a definite number as n → ∞,then the geometric series is	A. Convergent B. Divergent C. Oscillatroy D. None of these
10	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	A. A.P. B. G.P. C. H.P. D. None of these

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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

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

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

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

An infinite sequence has no

If a, b, c are in AP., a, b, c are in G.P. then A, m2b, c are in

p, q, r and s are integers. If the A.M. of the roots of x2- px + q2= 0 and G.M. of the roots of x2- rx + s2= 0 are equal, then

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

No term of a harmonic sequence can be

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

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

If the domain of sequence is finite set then the sequence is called

The harmonic mean between a and b is

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

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

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

The fifth term of the sequence an= 2n + 3 is ______

A sequence having no last term is called

A Geometric Series is divergent only if

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

1 + 2 + 3 + ...... + n = ______

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

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

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

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

If a1and r are the first term and the common ratio respectively then (n + 1)th term of the G.P. is

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

If ax= by= czand a, b, c are in G.P. then x, y, z are in

The next term of the sequence 1, 2, 4, 7, 11, ..... is.

The formula an = arn-1represents

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

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ECAT Mathematics Chapter 8 Important MCQ's

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

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 ______

If a, b, c are in AP., a, b, c are in G.P. then A, m²b, c are 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}

The fifth term of the sequence a_n= 2n + 3 is ______

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

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

If a₁and r are the first term and the common ratio respectively then (n + 1)th term of the G.P. is

If a^x= b^y= c^zand a, b, c are in G.P. then x, y, z are in

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