Question

_+_+_+_+_=30 using 1,3,5,7,11 u can also repeat the numbers

Answer 1

The sum of three odd numbers gives an odd number
So, the sum of 3 given odd numbers doesn’t results 30
So, it is an impossible factor
here we can't use 3! too
because 3! [3×2×1] results a even number 6
so we can’t use it.
If there will be an allowance of factorials, then the answers will be
3!+1+5+7+11=30
3!+1+3+7+13=30

Answer 2

7+3+11+9=30

this is one way.