Skip to main content
TakeMockTest

Reasoning practice

Alphanumeric Series Questions with Answers

Mixed strings of letters, digits and symbols, counted and scanned against a condition. This page pools every alphanumeric series question on the site — 184 of them, from 25 exams, weighted towards Banking, SSC, Railways — so you can drill the topic on its own instead of meeting four of them inside a full paper.

12% of the pool is graded hard on this site’s own scale and 14% easy, which is about average for this section.

Questions
184
Practice set
25 in 25 min
Difficulty
26/136/22
Negative marking
None
Start Alphanumeric Series practice

Alphanumeric Series questions with solutions

6 from the 184-question pool, worked in full.

  1. 1. Find the missing term in the series: Z, X, U, Q, ?

    • A. N
    • B. M
    • C. L ✓
    • D. K

    Solution. The gap between consecutive letters decreases (moving back) by an increasing amount each time (-2, -3, -4, -5): Z(26), X(24), U(21), Q(17), and the next term is 17-5=12, which is L.

  2. 2. Find the missing term: 2C6, 5F12, 8I24, ?

    • A. 11L48 ✓
    • B. 11K48
    • C. 10L48
    • D. 11L46

    Solution. The first number increases by 3 (2,5,8,11); the letter advances by 3 places (C,F,I,L); the last number doubles each time (6,12,24,48). The missing term is 11L48.

  3. 3. Find the missing letters: AB, DE, GH, ?, MN

    • A. IJ
    • B. KL
    • C. JK ✓
    • D. LM

    Solution. Each pair's starting letter jumps 3 positions ahead of the previous pair's start: A(1), D(4), G(7), J(10), M(13). The missing pair starts at J, giving "JK".

  4. 4. Find the missing term in the series: 2, 5, 14, 41, 122, ?

    • A. 366
    • B. 363
    • C. 364
    • D. 365 ✓

    Solution. Each term follows the rule (previous term × 3) − 1: 2→5, 5→14, 14→41, 41→122, 122→365.

  5. 5. Find the missing term in the series: B, E, I, N, ?

    • A. R
    • B. S
    • C. T ✓
    • D. U

    Solution. The gap between consecutive letters increases by one each time (+3, +4, +5, +6): B(2), E(5), I(9), N(14), and the next term is 14+6=20, which is T.

  6. 6. Find the missing letter: Y, V, S, P, ?, J

    • A. L
    • B. N
    • C. M ✓
    • D. K

    Solution. Each letter moves 3 places backward in the alphabet: P − 3 = M.

Exams that set Alphanumeric Series

5 categories, led by Banking, SSC, Railways.

Also set by RPF Sub-Inspector, RRB Group D, RRB Junior Engineer, SBI Clerk, SBI PO, SEBI Grade A, SIDBI Grade A & B, SNAP, SSC CHSL, SSC CPO, SSC GD Constable, SSC MTS, SSC Selection Post. Browse all exams.

Alphanumeric Series: frequently asked questions

How many alphanumeric series questions are there?

184, from the 25 exams here whose syllabus sets the topic. 14% are graded easy and 12% hard, which makes alphanumeric series about average for this section, where the mean is 17%.

Which exams ask alphanumeric series questions?

25 of the exams on this site, weighted towards Banking (14), SSC (5), Railways (4). Every question in this pool comes from one of their own mock tests, so the list below is the honest answer to whether the topic is worth your time.

Is alphanumeric series hard?

12% of these 184 questions are graded hard and 14% easy, making it about average for this section, where the mean is 17%.

More reasoning topics

See all practice topics →