Question
23Â Â Â Â 40Â Â Â Â Â Â 67 Â Â Â Â Â Â 104Â
     ?       208 What should come in place of question mark ‘?’ in the following number series?Solution
23Â +Â 17 = 40 40Â +Â 27 = 67 67Â +Â 37 = 104 104Â +Â 47 =Â 151 151Â +Â 57 = 208
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