b e d f ? h j ? l
i m
m i
i n
j m
Explanation:
The series may be divided into groups as shown:b e d / f ? h / j ? l
Clearly in the first group, the second and third letters are respectively three and two steps ahead of the first letter.
A similar pattern would follow in the second and third groups.
The series may be divided into groups as shown:b e d / f ? h / j ? l
Clearly in the first group, the second and third letters are respectively three and two steps ahead of the first letter.
A similar pattern would follow in the second and third groups.