Question

?+?+?=30using(1,3,5,7,9,11,13,15) you repeat no

Answer 1

factorial 3 + factorial 3+ factorial 3+factorial 3+ factorial 3= 30

Answer 2

Hey there is no answer to it......
Since adding any 3 odd numbers will result in an odd number. It is impossible to get an even number result. So it is impossible to get the result of 30 using just odd numbers in the blanks.