If f(m)=m^2 and m is a positive integer, which of the following CANNOT be the value of f(f(m))?
Choose the correct choice from the following options:  A) 256  B) 16  C) 1296  D) 625  E) 300
f(m)=m^2   f(f(m)) = (m^2)^2 = m^4   Therefore f(f(m)) will be numbers that are 4th power of other numbers.   Checking the options:   256 = 4^4   16 = 2^4   1296 = 6^4   625 = 5^4   300. This cannot be written as the 4th power of any number   Answer: 300
<result>E</result>
If f(m)=m^2 and m is a positive integer, which of the following CANNOT be the value of f(f(m))?