In following number series, two terms have been put within brackets. Choose the appropriate option

Look at this series: 53, 53, 40, 40, 27, 27, . . .What number should come next ?

** Option:**

**A.**12

**B.**14

**C.**27

**D.**53

**Answer: B . 14**

** Justification:**

In this series, each number is repeated, then 13 is subtracted to arrive at the next number.

Rule = (1st number) (1st number) (1st number - 13 = 2nd number) (2nd number repeat) (2nd - 13 = 3rd number) (3rd number repeat)....

The series is 53, 53, 40, 40, 27, 27...

(53),(53 - 13 = 40), (40), (40 - 13 = 27) (27), (27 - 13 = 14), (14)...

So the answer is **b = 14.**