In the following questions, various terms of an alphabet series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. BF, CH, ?, HO, LT
A) EK
B) DN
C) EL
D) EM
Answer: A) EK
Explanation:
The first letter moves 1, 2, 3, ... steps forward. The second letter moves 2, 3, 4, ... steps forward