Question

1,3,5,7,9,11,13,15=30
[ ]+ [ ]+ [ ] + [ ] + [ ] =30

Answer 1

no it can't be possible as number of boxes are odd and number to be filled are also odd so no possibiliies coz odd times odd is odd but 30 is an even number

Answer 2

7+1+15+3+(7+5/3) = 30 Thats the only possible way to solve this puzzle.