IQ Teaser #49
There are 10 symbols used below, each symbol representing a digit from 0 to 9. In each set of 3 symbols, an operation is performed between the first 2 symbols, and then another operation between the result of the first operation and the last symbol, to yield the final number:

%^& = 3
!#? = 33
*%& = 3
#!& = 27
@@% = 25
!$: = 50
?** = 20
^$$ = 14
:$$ = 63
#:% = 32

Given this, determine what @$# will yield.

31
32
33
34
35
36
37
38
39
None of the above

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