CA Foundation P3 · Chapter 6 · Question 4 of 9
The 8th term of the G.P. 3, 6, 12, 24, ... is:
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: D) 384
Explanation
tₙ = arⁿ⁻¹ with a = 3, r = 2. t₈ = 3 x 2⁷ = 3 x 128 = 384. Using 2⁸ gives 768 and 2⁶ gives 192.
More Sequence and Series - Arithmetic and Geometric Progressions MCQs
- Q6The sum of the first 6 terms of the G.P. 2, 6, 18, ... is:
- Q7Three numbers in A.P. have sum 27 and product 504. The largest of the numbers is:
- Q8The arithmetic mean and geometric mean of two positive numbers are 25 and 15 respectively. The numbers are:
- Q9The sum of the first n terms of the series 0.7 + 0.77 + 0.777 + ... is:
- Q1The 15th term of the A.P. 7, 11, 15, 19, ... is: