Select the number that can replace the question mark (?) in the following series.2, 5, 11, 23, 47, ?
A. 94
B. 71
C. 95
D. 96
A. 94
B. 71
C. 95
D. 96
Best answer
Answer: C. 95
Answer: (C) 95
Rule: ×2 + 1. 2×2+1 = 5, 5×2+1 = 11, 11×2+1 = 23, 23×2+1 = 47.
Next: 47 × 2 + 1 = 95.
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