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Which of these is NOT a terminating decimal?

Class 10Decimal ExpansionsNumber Systems

A $\frac{64}{455}$
B $\frac{15}{1600}$
C $\frac{29}{2 ^{3} \times 5}$
D $\frac{7}{250}$

Step-by-Step Solution

455 = 5 \times 7 \times 13

; the factors 7 and 13 mean

\frac{64}{455}

is non-terminating recurring. The rest have denominators with only 2 and 5.

Answer: A)

\frac{64}{455}

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