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The fraction (in lowest terms) gives a terminating decimal exactly when the prime factors of are only:

Class 9Rational and Irrational NumbersNumber Systems
  • A2 and 3
  • B2 and 5
  • C3 and 5
  • Dany primes

Step-by-Step Solution

A fraction in lowest terms terminates iff the denominator has no prime factors other than 2 and 5.
Answer: B) 2 and 5

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