Question
5Â Â Â Â Â Â Â Â Â 18Â Â Â Â Â Â Â Â Â Â Â Â Â
     44           83         135               200        ? What should come in place of question mark (?) in the following number series?Solution
5 + 13 = 18 18 + 26 = 44 44 + 39 = 83 83 + 52 = 135 135 + 65 = 200 200 + 78 = 278
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