In this series we can see that there is a recurring +3 and -2 operation to obtain the subsequent terms ie., 5 + 3 = 8 8 - 2 = 6 & 6 + 3 = 9 9 - 2 = 7 Therefore the next 2 terms will be 7 + 3 = 10 10 - 2 = 8.