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Question
What letter Should Come Next?
JAK, KBL, LCM, MDN, _____
Options:
A .  OEP
B .  NEO
C .  MEN
D .  PFQ
Answer: Option B


This is an alternating series in alphabetical order. The middle letters follow the order ABCDE. The first and third letters are alphabetical beginning with J. The third letter is repeated as a first letter in each subsequent three-letter segment.



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