Question
15Â Â Â Â Â 32Â Â Â Â Â Â 51Â Â Â Â Â Â 74Â Â Â Â Â
?      134 What will come in place of the question mark (?) in the following series?Solution
15 + 17 = 32 32 + 19 = 51 51 + 23 = 74 74 + 29 =Â 103 103 + 31 = 134
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