Medium
Find the missing term in the letter series: ABZ, BCY, CDX, DEW, ?
Explanation
Explanation
The first two letters of each group move forward by one letter each time (AB, BC, CD, DE, then EF), while the third letter moves backward from Z each time (Z, Y, X, W, then V). So the next group is EFV.
PRO TIP
Re-check your working by substituting the answer back into the original question.