Which number will replace the question mark (?) to continue the given number series?62, 51, 41, 32, 24, ?

Which number will replace the question mark (?) to continue the given

1.	Which number will replace the question mark (?) to continue the given number series?62, 51, 41, 32, 24, ?
A.	15
B.	18
C.	17
D.	16
Answer» D. 16