Mathematical Symbol
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Replace the \’X\’ with any mathematical symbol to make the expression equal to 111.
18 X 12 X 2 X 3 = 111 
If ALL the ‘X’s represent the SAME operation, there is no possible solution. If each ‘X’ can have separate meaning, one possible solution is:
18 x 12 / 2 + 3 = 111 (The first ‘X’ replaced by multiplication, second one by division and the third one by addition.)
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