Question
31Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
16.5                       18                          ?                             60.5                       154.25 What should come in place of the question mark (?) in the following number series?Solution
31 × 0.5 + 1 = 16.5 16.5 × 1 + 1.5 = 18 18 × 1.5 + 2 = 29 29 × 2 + 2.5 = 60.5 60.5 × 2.5 + 3 = 154.25
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