Direction: In the series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much. Look at this series: 2, 6, 18, 54,…
Question and options
Direction: In the series, look for the degree and direction of change between the numbers. In other words, do the numbers increase or decrease, and by how much.
Look at this series: 2, 6, 18, 54, _____ What number should come next?
- 108
- 148
- 162
- 216
Answer and explanation
Correct answer: C - 162
Each term is three times the one before it: 2 × 3 = 6, 6 × 3 = 18 and 18 × 3 = 54. The next term is therefore 54 × 3 = 162. 108 would follow only from doubling, and 148 and 216 fit no step of the series.
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CUSAT CAT Five-Year LL.B.
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