How many positive integers $n$ satisfy $/lfloor / sqrt{n} / rfloor = 5$?

For this case we have the following equation:

root (n) = 5

Clearing n we have:

n = 5 ^ 2

n = 25

Answer:

A positive integers n that satisfy root (n) = 5 is:

n = 25

(only one integer satisfies the equation given in the problem)