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If the function f :N to N is defined by ...

If the function `f :N to N` is defined by `f (x)= sqrtx,` then `(f (25))/(f (16)+ f(1))` is equal to

A

`5/6`

B

`5/7`

C

`5/3`

D

`1`

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The correct Answer is:
D
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