We are the only three consecutive odd integers in mathematics that are all prime numbers. What is the sum of our three values?
15
Among any three consecutive odd integers (n, n + 2, n + 4), one must be divisible by 3. Since the only prime divisible by 3 is 3 itself, the primes must be 3, 5, and 7. Their sum is 3 + 5 + 7 = 15.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Medium. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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