alleryThe repeating decimal 0.777... equals which fraction?
A7/10
B7/9
C7/99
D7/100
Answer & Solution
Correct answer: B. 7/9
1. The pattern 7 has one digit, so the denominator has one nine.
2. The pattern is the numerator: 7/9.
3. 7/10 and 7/100 are finite decimals, and 7/99 is for a two-digit pattern like 0.0707...
_Source: Wikipedia, Fraction, section Converting repeating digits in decimal notation to fractions_
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