In following alphabet series , one term missing as shown by question mark . Choose missing term from options.
BF, CH, ?, HO, LT
Option:
A. DN
B. EL
C. EK
D. EM
E. FJ
Answer: C . EK
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Justification:
The first letter of the first, second, third, .... terms are respectively moved one, two, three,... steps forward
while the second letter are respectively moved two, three, four,... steps forward to obtain the corresponding letters of the successive terms.
