1.  42 40 38 35 33 31 28
A. 25 22
B. 26 23
C. 26 24
D. 25 23
E. 26 22

Answer: Option C

Explanation:

This is an alternating subtraction series in which 2 is subtracted twice, then 3 is subtracted once, then 2 is subtracted twice, and so on.