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Question
What letter Should Come Next?
2W3, 1S9, 1Q7, __, 1K1
Options:
A .  1P6
B .  1M3
C .  1R8
D .  1S9
E .  2W3
Answer: Option B


The letters are consecutive letters with the prime number as the position value and the digits on either of the letter together indicate the place value of the letter.2W3 => W = 231S9 => S = 191Q7 => Q = 171K1 => K = 11Missing term is 1M3



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