## Elementary Algebra

The prime factored form of 36 is: $36=2\times2\times3\times3$ The prime factored form of 64 is: $64=2\times2\times2\times2\times2\times2$ Since two 2s are common to both, the greatest common factor of 36 and 64 is $2\times2=4$. Therefore, the question statement is true.