Question

20, 20, 17, 17, 14, 14, 11, ... choose which pair of numbers comes next?
A.43320
B.43415
C.43418
D.43321

Answer 1

Logically, ${({11,8})}$ should come but it's not in the options.....
Because it's a simple series of numbers where 3 is subtracted after every 2nd number and the resulting number is repeated once then again subtraction and so on....