What will come in place of the question mark (?) in the following number series?_x005F_x000D_ 5, 7, ?, 25, 45, 75

What will come in place of the question mark (?) in the following numb

1.	What will come in place of the question mark (?) in the following number series?_x005F_x000D_ 5, 7, ?, 25, 45, 75
A.	11
B.	13
C.	15
D.	19
Answer» C. 15