Question
7 7 ? 43 163
831 What should come in place of the question mark (?) in the following number series?Solution
7 × 1 + 0² = 7 7 × 2 - 1² = 13 13 × 3 + 2² = 43 43 × 4 - 3² = 163 163 × 5 + 4² = 831
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