ECAT Mathematics Sequences and Series Online Test

Mathematics Sequences and Series MCQS Online Test

ECAT Math Sequences and Series Chapter Online Test

Total Questions: 76
Time Allowed: 40 Minutes
Total Marks: 76
How to Attempt Test: Please choose the right Option in MCQ-type question.
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ECAT Math Sequences and Series Chapter Online Test

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Math

1. A number G is said to be the geometric mean between two numbers a and b of a,G,b is

2. If |x| < 1 and y = x-x² + x³-x⁴ + ………….. ∞, then the value of x is

3. For an H.P 3/11, 6/31, 3/20, ………. , The common difference of the corresponding AP is

4. The fifth term and the nth term of the A.P. 1,5……. Are

5. The geometric mean between √3 and √27 is

6. The next two terms of the sequence 1,3,7,15,31,.........are

7. If y = 1 + 2x + 4x² + 8x³ + ……….. ∞ then x = ?

8. Sum of all the terms in sequence, 5/6, 25/36, ---- ∞ is

9. 9th term of the sequence 25/3, 1/3, 1/6 --------- is

10. Three G.M between 5 & 0.008 are

11. The common difference of the sequence 5,8,11,14,…is

12. A sequence of nos. Whose reciprocal from an arithmetic sequence is called _________ sequence.

13. Common fraction of 7.755 is

14. 5th term of a G.P. is 2, then the product of first 9 terms is

15. The two geometric means between a and b are

16. a₂₇ of 7, 23/2, 32/2, --------- is

17. If n is the total number of arithmetic means between a and b. The formula of mth arithmetic mean between a and b is

18. The A.M between 3?(5) and 5?(5) is

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

20. Series obtained by adding the terms of an harmonic sequence is

21. If a, b, c are in A.P., then 3ᵃ, 3ᵇ, 3ᶜ are in

22. The A.P. whose nth term is 2n – 1 is

23. Nth term of A.P is

24. If x, y, z are the pth, qth, rth terms of an A.P. and also of G.P, the xʸ¯ˣ, yˣ¯ˣ, zˣ¯ʸ equals

25. An A.P. consists of n (odd terms) and its middle term is m. then the sum of the A.P. is


 

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