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اگلا تلاش کریں: 3, 7, 15, 31, 63, ?

A125
B99
C127
D95
Answer & Solution
Correct answer: C. 127
ہر اصطلاح ہے 2 × پچھلا + 1: 3 → 7 (2×3+1)، 7 → 15 (2×7+1)، 15 → 31، 31 → 63، 63 → 127۔ یا 2ⁿ⁺¹ - 1۔
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