alleryA rational number p/q (in lowest terms) has a terminating decimal expansion if the prime factors of q are:
Aonly odd primes
Bany prime numbers
Conly 2 and/or 5
Donly 3 and 7
Answer & Solution
Correct answer: C. only 2 and/or 5
p/q terminates iff the denominator's only prime factors are 2 and/or 5.
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