Question
147Â Â Â Â Â Â 138Â Â Â Â Â Â Â 120Â Â Â Â Â Â
93      ?      12 What should come in place of the question mark (?) in the following number series?Solution
147Â - 9 = 138 138 - 18 = 120 120 - 27 = 93 93 - 36 =Â 57 57 - 45 = 12
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