Answer:
5, 1, 6, 7, 13, 21, 34, 51, 77
Solution:
Next possible number in the given sequence I. -4,1,8 is 17
Next possible number in the given sequence II. 5,6,13 is 26
☆ The next 2 number for given series -4,5,1,6,8,13 are 17,26
☆The next 2 number for given series 5,1,6,7,13,21,34 are 51,77