Question
8    12    39      ?      Â
180Â Â Â Â 216 What will come in place of the question mark (?) in the following series?Solution
8 + 22Â = 12 12 + 33Â = 39 39 + 42Â = 55 55 + 53Â =Â 180 180 + 62Â = 216
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