28 25 5 21 18 5 14 , 28 25 5 21 18 5 14

A. 11 5

B. 10 7

C. 11 8

D. 5 10

Correct Answer :

A. 11 5

Explanation

5 10This is an alternating subtraction series the interpolation of a random number, 5, as every third number. In the subtraction series, 3 is subtracted, then 4, then 3, and so on.