If 51 @ 24 = 9' and 56 @ 22 = 8', then 72 @ 32 = ?'. What will come in place of question mark?
51 x 24 = 1224; 1+ 2 + 2 + 4 = 9 56 x 22 = 1232; 1 + 2 + 3 + 2 = 8 72 x 32 = 2304; 2 + 3 + 0 + 4 = 9
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