Answer :
possible only in case of factorial.
3!+1+3+13+7=30
3!+3!+3!+3!+3!=30
11+1+3+15=30
3! + 15 + 9 = 30
3!+1+3+13+7=30
3!+3!+3!+3!+3!=30
11+1+3+15=30
3! + 15 + 9 = 30
as it is not possible to get an odd number by adding odd no.s odd no.of times, we could do it by using factorials,for example:
11+13+3! -=30
[ by this way,you may also find other combinations ]
11+13+3! -=30
[ by this way,you may also find other combinations ]