1.complete the following series:
A2F, B3E, C5D, D7C, -------------
2.COMPLETE THE FOLLOWING SERIES:
A5Z, C10X, E15V, G20T, -----------
A2F, B3E, C5D, D7C, -------------
2.COMPLETE THE FOLLOWING SERIES:
A5Z, C10X, E15V, G20T, -----------