ECAT Mathematics MCQ's Test For Full Book With Answers

ECAT Mathematics MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 No term of a harmonic sequence can be 0 1 2 3
2 A sequence of number whose reciprocals form an arithmetic sequence is called Geometric sequence Arithmetic series Harmonic sequence Harmonic series
3
4 Find the sum of the infinite geometric series 2 + 1 + 0.5 + .... 3.5 3 4 None of these
5
6
7 0 1 2 3
8 The series obtained by adding the terms of a geometric sequence is called Infinite series Arithmetic series Geometric series Harmonic series
9 The sum of an infinite geometric series exist if | r | < 1 | r | > 1 r = 1 r = -1
10 If a1, r are first term and the common ratio respectively then the sum of an infinite geometric series is
11 6x - 2 + c x<sup>3</sup>- x<sup>2</sup>+ x + c 6x - x<sup>2</sup>+ c 6x<sup>3</sup>- x<sup>2</sup>+ c
12 If a1and r are the first term and the common ratio respectively then (n + 1)th term of the G.P. is 0 a<sub>1</sub>r<sup>n-1</sup> a<sub>1</sub>r<sup>n+1</sup> a<sub>1</sub>r<sup>n</sup>
13 The common ration of a geometric sequence cannot be 0 1 2 3
14 6x + 2 + c 6x + x<sup>2</sup>+ c 6x<sup>3</sup>+ x<sup>2</sup>+ x
15 No term of a geometric sequence can be 0 1 2 3
16 Sum of n terms of a geometric series if | r | < 1 is
17 2x + 3 x<sup>2</sup>+ 3 + c
18
19 none of these
20
21 Find the geometric mean between 4 and 16
22 The numbers of G1, G2, G3...... Gnare called n geometric means between a and b is a, G1, G2,G3, ... Gn, b are in H.P. A.P. G.P. None of these
23 G is geometric mean between a and b if a, G, b is A.P. G.P. H.P. None of these
24 Geometric mean between a and b is
25 3, 6, 12,.... is A.P G.P. H.P. None of these
26 The nth term of a G.P. is a<sub>1</sub>r<sup>n</sup> a<sub>1</sub>r<sup>n+1</sup> a<sub>1</sub>r<sup>n-1</sup> a<sub>1</sub>r<sup>-n</sup>
27 The sum of n terms of a series is denoted by d n S<sub>n</sub> a<sub>n</sub>
28 The series obtained by adding the terms of an arithmetic sequence is called the Infinite series Harmonic series Geometric series Arithmetic series
29 A number A is called the arithmetic mean between a and b if a, A, b is ______ Arithmetic sequence Geometric sequence Harmonic sequence Arithmetic sequence
30 Write the first four terms of the sequence if an= (-1)nn2 -1, 4, -9, 16 1, -4, 9, 16 1, 4, 9, 16 None of these
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