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Question

`sqrt(25/81  - 1/9)`  = ?


Options:
A .  `2/3`
B .  `4/9`
C .  `16/81`
D .  `25/81`
Answer: Option B

`sqrt(25/81  - 1/9)` =  `sqrt((25 - 9)/(81))` =  `sqrt(16/81)` =   `sqrt(16)/sqrt(81)` =  `4/9`




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