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 ?
Option:
A. 44 34
B. 42 36
C. 42 32
D. 40 34
E. 38 32
Answer: B . 42 36
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Justification:
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
