2012-01-12 pm 6:27:00 65.--.96.123 |
| 1. prime number Example 5 = {1, 5} 17 = {1, 17} 2. square number Example 4={ 1, 2, 4} 9 = {1, 3, 9} 3. 3, 6, 18 => 18/6 = 3
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