alleryWhich fraction cannot be written exactly as a finite decimal?
A1/2
B1/4
C1/3
D1/5
Answer & Solution
Correct answer: C. 1/3
1. Divide each: 1/2 = 0.5, 1/4 = 0.25, 1/5 = 0.2, all ending.
2. 1/3 gives 0.3333... and never ends.
3. So only 1/3 cannot be written exactly with finitely many digits.
_Source: Wikipedia, Fraction, section Converting between fractions and decimal notation_
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