Iadd 3 odd numbers together to make 50 why am i incorrect

Adding odd numbers will only give you an even sum if the amount of numbers you added is an even number.

For example,
25 is an odd number. If you add 25, 2 times (2 is an even number) you will get 50 (an even number). If you add 25, 4 times (4 is an even number) you will get 100 (still, an even number)
However, if you add 25, 3 times (an odd number) you will get 75 (an odd number). If you add 25, 5 times (an odd number) you will get 125 (still an odd number).

Hopefully, that helped (: Sorry if I confused you lol

You can never add odd numbers by an odd number of times to give you and even number. You can add an odd number and even number of times to give you an even number.
EX: 5 + 5 = 10      (5 is an odd number , but since you added it by an even number of times you get an even answer.)