alleryHow many fractions n/60 are in lowest terms with integer n and 0.4 < n/60 < 0.6?
A4
B3
C5
D2
Answer & Solution
Correct answer: D. 2
The possible numerators are 25 through 35, and only 29 and 31 share no factor greater than 1 with 60, giving two fractions.
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