Find the missing number: 56, 58, 62, ?, 86, 118, 182

Correct Answer: (D) 70

The differences between consecutive terms double at each step ($2^n$): $58 - 56 = 2$, $62 - 58 = 4$, so the next difference must be $8$, giving $62 + 8 = 70$. Continuing the pattern, $70 + 16 = 86$, $86 + 32 = 118$, and $118 + 64 = 182$, confirming 70 is correct.