84 78 72 66 60 54 48What number should come next ? - Number Series - Series Completion - Verbal Reas

In following number series, two terms have been put within brackets. Choose the appropriate option - 84 78 72 66 60 54 48What number should come next ?

A. 44 34

B. 42 36

C. 42 32

D. 40 34

E. 38 32

Answer: B. 42 36

In this simple subtraction series, each number is 6 less than the previous number.

Rule = (1st number) (1st no - 6 = 2nd no.) (2nd no - 6 = 3rd no). . .
Now (84) (84 - 6 = 78) (78 - 6 = 72) (72 - 6 = 66) (66 - 6 = 60) (60 - 6 = 54) (54 - 6 = 48) (48 - 6 = 42) (42 - 6 = 36).
So the answer is b = 42 36

Posted in: Number Series - Series Completion - Verbal Reasoning