Find the Next Number in the given series 8 7 11 12 14 17 17 22 ?



Find the Next Number in the given series 8 7 11 12 14 17 17 22 ?

Answer : 20

Explanation:


    Written the given series into two pairs
    8, 11, 14, 17, ? - difference of first pair is 3
    7, 12, 17, 22 - difference of 2nd pair is 5
    So,
    17+3=20
    Therefore the series is 8 7 11 12 14 17 17 22 20


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