Complete the series.
33, 36, 12, 15, 5,(…….)

Correct option is D

33, 36, 12, 15, 5,(…….)
There is 2 different series
1st series = 33, 12, 5
2nd series = 36, 15, ……
1st series = 33 -21 = 12
12 – 7 = 5
Similarly
36 -21 = 15
15 – 7 = 8