Question
26 63 124 215 342 511
? What should come in place of the question mark (?) in the following number series:Solution
33 – 1 = 26 43 – 1 = 63 53 – 1 = 124 63 – 1 = 215 73 – 1 = 342 83 – 1 = 511 93 – 1 = 728
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