Correct Answer: 12
Explanation:
√2n = 64 ⇒ 2n = (64)2 ⇒ 2n = (2 × 2 × 2 × 2 × 2 × 2)2 ⇒ 2n = (26)2 ⇒ 2n = 26 × 2 = 212 ⇒ n = 12.
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