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	The sides of a right angled triangle are in A.P The ratio of sides is	A. 1:2:3 B. 3:4:5 C. 2:3:4 D. 5:8:3
2	A series consisting of an unlimited number of terms is termed as an	A. Finite sequence B. Infinite sequence C. ^{Infinite series} D. geometric sequence
3	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
4	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
5	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}	A. 65 B. 67 C. 71 D. 75
6	The sixth term of the sequence 1,3,12,60....is	A. 1500 B. 72 C. 2160 D. 2520
7	A sequence having no last term is called	A. arithmetic sequence B. Geometric sequence C. Finite sequence D. Infinite sequence
8	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	A. q is an odd integer B. r is an even integer C. p is an even integer D. s is an odd integer
9	An indicated sum of terms of a sequence is represented by	A. Sn B. an C. S(n) D. {Sn}
10	The sum of first twenty odd integers in A.P is	A. 400 B. 397 C. 404 D. 408

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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

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

H.M. between 3 and 7 is

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

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

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

The third term of the sequence an= (-1)n-1(n-7) is ______

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

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

No term of a geometric sequence can be

A sequence having no last term is called

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

The element range of sequence are called

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

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

The sum of first 60 natural numbers is

Arithmetic mean between a and b is

Find the geometric mean between 4 and 16

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

The 10th common term between the series 3+7+11+....... and 1 + 6 +11 + ....... is

The third term of a G.P. is 4, The product of first five terms is

If Sn is a definite number as n → ∞,then the geometric series is

If a1, r are first term and the common ratio respectively then the sum of an infinite geometric series is

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

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

Let Sndenote the sum of the first n terms of an A.P. If S2n= 3 Sn: Snis equal to

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

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

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

Sum of first n terms of an arithmetic series is

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ECAT Mathematics Chapter 8 Important MCQ's

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

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

The third term of the sequence a_n= (-1)^n-1(n-7) is ______

If S_rdenotes the sum of the first r terms of a G.P., then S_n, S_2n- S_n, S_3n- S_2nare in

If a₁, r are first term and the common ratio respectively then the sum of an infinite geometric series is

Let S_ndenote the sum of the first n terms of an A.P. If S_2n= 3 S_n: S_nis equal to