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Square root and cube root

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  1. If √256 / √x = 2, then x is equal to ?
    1. 64
    2. 128
    3. 512
    4. 1024
Correct Option: A

√256 / √x = 2
⇒ 16 = 2√x
⇒ √x = 8
∴ x = 64.


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