Which of the following numbers have terminating decimal expansion and why?
Here, the denominator is 16.
16 = 2 × 2 × 2 × 2 × 50
We can see that that 16 contains 2 as its prime factors.
Also, 235 = 5 × 47
So, g. c. d(235, 16) = 1
Therefore,
has a terminating decimal expansion.
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