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What alphanumeric term follows in the series: 2K, 5L, 10N, 17Q, ?
A26U
B20S
C18K
D25M
Answer & Solution
Correct answer: A. 26U
1. Numbers: 2, 5, 10, 17 increase by 3, 5, 7, then 9, giving 17 + 9 = 26.
2. Letters: K(11), L(12), N(14), Q(17) advance by 1, 2, 3, then 4, giving 17 + 4 = 21.
3. Position 21 is the letter U.
4. Combine the number and letter: 26U.
_Source: RRB Group D CEN-02/2018 PYQ, Q.46._
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