Question

If p/q is a rational number (q is not equal to 0), what is the condition on q, so that the decimal representation of p/q is terminating?

Answer 1

for terminating : the prime factors of 'q' will either be 2 or 5 or both.

for non-terminating but reccuring : the prime factors of 'q' will be other than 2 or 5 .

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