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