well, by sum you would mean adding, which would be,
19
+17
9 + 7 = 16
2
+1
6
2 + 1 = 3
your answer = 36
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'17' is a prime number. The sum of the digits is 1 + 7 = 8 > 7.
They are 13, 15, 17, 19 and 21.
17 and 19.
No, they are consecutive but sum means that if you add them together it will equal 36. Also 2 is not odd. The numbers you are looking for are 17 and 19.
The only proper factor of 51 that is less than 1/3 of 51 is 3. Divide the sum of three consecutive odd integers by 3: 51/3 = 17. The smallest of these integers will be two less than 17 and the largest will be two more than 17, so the three consecutive odd integers having a sum of 51 are 15, 17, and 19.