In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative.
G4T, J10R, M20P, P43N, S90L
A
G4T
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B
J10R
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C
M20P
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D
P43N
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E
S90L
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Solution
The correct option is C J10R The first letter of each term is moved three steps forward and the last letter is moved two steps backward to obatin the corresponding letters of the next term. The numbers follow the sequence x 2 + 1, x 2 + 2, x 2 + 3, x 2 + 4. So, 10 is wrong and must be replaced by (4 × 2 + 1) i.e. 9.