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ECAT - Practice Test - Maths - Sequences and Series Quiz

Attempt 10 MCQs on ECAT - Practice Test - Maths - Sequences and Series | Quiz 2

11. What is the general formula for the nth term of a geometric progression (GP) with first term a and common ratio r?



12. Find the common ratio of the GP: 2, 6, 18, 54, ...



13. Find the 5th term of the GP: 2, 6, 18, 54, ...



14. What is the sum of the first n terms of a GP with first term a and common ratio r (r≠1)?



15. What is the geometric mean between two numbers a and b?



16. Find the next term in the GP: 16, 8, 4, 2, ...



17. Find the 4th term of the GP: 3, 6, 12, ...



18. Find the sum of the first 4 terms of the GP: 3, 6, 12, 24.



19. What is the condition for an infinite geometric series to converge?



20. What is the formula for the sum to infinity of a GP with first term a and common ratio r (|r| < 1)?



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