What is the next number in the sequence 0, 7, 26, 63, 124, ... ?
Answer and explanation
Correct answer: B. 215
- Step 1: Add 1 to each term: 1, 8, 27, 64, 125, which are the cube numbers. Step 2. The next cube is 6³ = 216, and subtracting 1 gives 215. Answer: 215. Why not the others: 185: This adds 61, repeating the last gap. 216: This is 6³, but the rule is n³ - 1. 249: This doubles 124 and adds 1.
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