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Simple Fractions
Problem
A fraction whose numerator (top number) is less than its denominator (bottom number) is called a simple fraction.
1  9 |  | 2 9 | | 4 9 | | 5 9 | | 7 9 | | 8 9 |
There are six simple fractions involving ninths that cannot be cancelled down. How many simple fractions with a denominator equal to 24 cannot be cancelled down?
Problem ID: 72 (Apr 2002) Difficulty: 1 Star
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