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Question

`3sqrt(sqrt(.000064))` = ?


Options:
A .  .02
B .  0.2
C .  2
D .  None of these
Answer: Option B

`sqrt(.000064)` = `sqrt(64/10^6)` =  `8/10^3` = `8/1000` = .008

`:.`  `3sqrt(sqrt (.000064))` = `3sqrt(.008)` = `3sqrt(8/1000)` = `2/10` = 0.2




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