What number comes next in the series 3, 6, 9, 15, 24, 39, ...?
Answer and explanation
Correct answer: D. 63
- Step 1: Each term is the sum of the two before it, so the next term is 24 + 39 = 63. Answer: 63. Why not the others: 78, 64 and 54 don't fit.
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