If 16 - 2 = 2, 9 - 3 = 0, 81 - 1= 8, then what is 64 - 4 = ?
Answer: Option A
Explanation:
As, √ 16 - 2 = 4 - 2 = 2
√ 9 - 3 = 3 - 3 = 0
and √ 81 - 1 = 9 - 1 = 8
Similarly, √ 64 - 4 = 8 - 4 = 4
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