Look at the series: 3, 9, 27, 81, __________ What number should come next?
Question and options
Look at the series: 3, 9, 27, 81, __________ What number should come next?
- 243
- 162
- 324
- 729
Answer and explanation
Correct answer: A - 243
Each term is 3 times the one before (3, 9, 27 and 81 are the first four powers of 3), so the next term is 81 × 3 = 243. 162 doubles 81 instead of tripling it, and 729 is 3 to the sixth power, which skips a term.
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CUSAT Three-Year LL.B.
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