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Question

which one of the following numbers has rational square root ?


Options:
A .  0.4
B .  0.09
C .  0.9
D .  0.025
Answer: Option B

`sqrt(0.09)` =   `sqrt(9/100)` =  `3/10` =  0.3, which is rational.

`:.`  0.09 has rational square root.




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