Study the given pattern carefully and select the number that can replace the question
mark (?) in it.
First row: 12, 36, 60
Second row: 24, 72, 120
Third row: 33, 99, ?
(NOTE: Operations should be performed on the whole numbers, without breaking down the number into its constituent digits. For example, 13 - Operations on 13 such as adding/deleting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)