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Which of the following terms will replace the question mark (?) in the given series to make it logically complete? LQ13 MR20 NS27 OT34 ?
PV41
PV42
PU42
PU41
PU41
Track the series in three independent components: the first letter increases by 1, the second letter increases by 1, and the number increases by 7.
Track the series in three independent components: the first letter increases by 1, the second letter increases by 1, and the number increases by 7.
Analyze the first letter
The first letters are L, M, N, O. These follow a consecutive alphabetical pattern: L(+1)=M, M(+1)=N, N(+1)=O. Therefore, the next letter is O+1 = P.
Analyze the second letter
The second letters are Q, R, S, T. These follow a consecutive alphabetical pattern: Q(+1)=R, R(+1)=S, S(+1)=T. Therefore, the next letter is T+1 = U.
Analyze the number
The numbers are 13, 20, 27, 34. The difference between consecutive terms is constant: 13+7=20, 20+7=27, 27+7=34. Therefore, the next number is 34+7 = 41.
A is incorrect because the second letter must be U, not V. B is incorrect because both the second letter is wrong and the number is wrong. C is incorrect because the number must be 41, not 42.
D is correct because the pattern follows a shift of +1 in both letters and a constant addition of +7 to the numbers, resulting in PU41.
In alphanumeric series, always solve the alphabet and numeric components separately to avoid confusion; this prevents errors common in complex sequences.
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