Question

Determine the number of elements of order 5 in z25 z5

Answer 1

Hi there,

The answer to your question is as follows;

The number of elements of order 5 equals

φ(25)+φ(5) = (25−5)+(5−1)

= 24.

Hence the number of elements in order 5 of z125 and z5 of order 5  is 24.

I hope the answer is satisfactory for you.

Thanks for asking.