31
13
The sum of the numbers 13, 15, and 17 added together is 45. Since each number is repeated five times, you can multiply 45 by 5 to get 225. Therefore, the sum of all the numbers listed is 225.
If the number (count) of odd values to sum is odd, then the answer is odd.If the number (count) of odd values to sum is even, then the answer is even.
The sum of 1/3 and 2/7 is 13/21
Count how many of the numbers are odd. If an odd number of them are odd, then their sum is odd. If an even number of them are odd, then their sum is even.
Even plus even equals even. Odd plus odd equals odd. Odd plus even equals odd. 13 + 45 (odd plus odd) will be even. Even plus 24 will be even. Even plus 17will be odd. 13 + 45 + 24 + 17 will be odd.
No it doesn't. That sum is 100.
17
30.
13 + 9 + 17 = 39
58 + 17 = 75
17 plus 15 plus 13 equals 45.