Option 2: Log3 (9)+3? + 1=30 ( Log3 (9)=2，)

Scheme 3: 5.5+9.5+ 15=30.

Scheme 4:1'+15+15 = 30 (the derivative of any constant is 0).

Option 5: 3? +3+ 1'=30 (3? =27 1'=0)

Option 6: 3? +9-3! =30 (use negative numbers)

Scheme 7:11+13+(6) = 30 (reversing 9 to 6 is opportunistic).

Scheme 8: 1 (days)+1 (hours) +5 (hours) =30 (hours)

Scheme 9: 15+15+1= 30 (decimal 30 means decimal 33,15 means decimal 16).