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

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

3. Which one is true?

4. If r< -1 and r > 1 then the series is

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

6. The general term of the sequence a, ar, ar, ….is

7. If H is harmonic mean between 7 and 8, then H/2 =

8. If Sr denotes the sum of the first r terms of a G.P., then Sn, S₂n – Sn, S₃n – S₂n are in

9. A function whose domain is the set of natural numbers is called

10. G₁,G₂, ….., Gn are said to b n geometric means between a and b if a, G₁, G₂, …….., Gn b is

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

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

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

14. The fifth term of the sequence an = 2n – 3 is

15. The A.M. of two numbers is 34 and G.M. is 16, the numbers are

16. The two geometric means between a and b are

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

18. A sequence in which any term dividend by its immediate previous terms is called the

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

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

21. The term of a GP is -36 and common ration is – 1/3 then a₅ =?

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

23. The sum of an infinite geometric series exist only if the condition on the common ratio r is

24. The series obtained by adding the terms of geometric sequences is called

25. The geometric mean between -2t and 8t are


 

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