Question 415459: Clue 1: I am a prime numeber less than 75
Clue 2: my digits sum to 13
Answer by richard1234(7193)   (Show Source):
You can put this solution on YOUR website! The best way is to guess and check all the two digit numbers with a digit sum of 13. This leaves 49, 58, 67, 76, 85, 94. We can eliminate the even numbers, as well as numbers greater than 75, so the only choices are 49 and 67. Hence, the only prime is 67.
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