Question

Solve this puzzle:

__ + __ + __ + __ + __  = 30

Please use any of the numbers (1,3,5,7,9,11,13,15) to fill the blanks, you can also repeat the numbers...

Answer 1

If n is odd then,
Sum of odd no.s n times is not possible.
For ex :-

1+3+5+7+9 = 25

In the above case,  1,3,5,7 and 9 are odd no.s  and these odd no.s are totally added 5 times and 5(i.e. n) is odd. Therefore, it can not have an even sum like 30.

So, this question is can't be solved.

****************************HOPING THAT THIS WILL HELP YOU!!!******************************

Answer 2

It cannot be done. 
All the choices are odd numbers. The sum of five odd numbers must necessarily be odd. 30 is not odd, so 30 is not a possible sum.