Which of the following lists of numbers is/are an Geometric Progression :
(A) 2, 4, 8, 16, 32,........
(B) 3, 9, 27, 81,.......
(C) -3, -6, -12, -24,.......
(D) 21, 18,15,.......
Choose the correct answer from the options given below:
Which of the following lists of numbers is/are an Geometric Progression :
(A) 2, 4, 8, 16, 32,........
(B) 3, 9, 27, 81,.......
(C) -3, -6, -12, -24,.......
(D) 21, 18,15,.......
Choose the correct answer from the options given below:
Solution
✅ Correct Option: 1
A geometric progression has a constant ratio between consecutive terms.
In (A) the ratio is , in (B) it is , and in (C) it is as well.
In (D) the terms decrease by a constant difference of , so it is an arithmetic progression. Hence (A), (B) and (C) only.
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