Question

Which of the following has a non-terminating decimal expansion?

• A. 77/210
• B. 23/8
• C. 17/80
• D. 35/50

Answer 1

Answer: (A), (B)

The correct options are
A

77/210

B

23/8

A rational number $\frac{p}{q}$ ( where $\frac{p}{q}$ is in simplest form), such that the prime factors of q are not of the form $2^n$$5^m$, (where n and m are whole numbers) then it has a non-terminating decimal expansion.