Reasoning

Letter and Symbol Series

192 Questions

Letter and symbol series questions evaluate pattern recognition and logical reasoning through alphabetical sequences. Test takers must identify missing letters and decode structural patterns. These are standard components of verbal reasoning in major competitive exams.

Alphabet sequence completionMissing letter patternsSymbol gap fillingLetter analogiesMixed alphanumeric series

Letter and Symbol Series Questions

Multiple choice

Directions: In each of the following questions, a letter-number series is given with one or more term missing as shown by (?). Choose the missing term out of the given alternatives.

Q1F, S2E, U6D, W21C,?

  1. Y44B

  2. Y66B

  3. Y88B

  4. Z88B
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The first letters increase by 2 (Q→S→U→W→Y). The last letters decrease by 1 (F→E→D→C→B). The numbers follow n×(n+1)+(n+1): 1, 2, 6, 21, 88. Only Y88B satisfies all three conditions.

Multiple choice

Directions: In each of the following questions, a letter-number series is given with one or more terms missing as shown by (?). Choose the missing term out of the given alternatives.

KM5, IP8, GS11, EV14, ?

  1. BX17

  2. BY17

  3. CY17

  4. CZ17
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The first letters decrease by 2 each time (K→I→G→E→C). The middle numbers increase by 3 (5→8→11→14→17). The last letters decrease by 2 (M→P→S→V→Y). Only CY17 fits all three patterns.

Multiple choice

Directions: In each of the following questions, a letter-number series is given with one or more terms missing as shown by (?). Choose the missing term out of the given alternatives.

C4X, F9U, I16R, ?

  1. K25P

  2. L25P

  3. L25O

  4. L27P
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The first letters increase by 3 (C→F→I→L). The middle numbers follow squares: 4, 9, 16, 25. The last letters decrease by 3 (X→U→R→O). L25O is the only option satisfying all patterns.

Multiple choice

Directions: In each of the following questions, a letter-number series is given with one or more terms missing as shown by (?). Choose the missing term out of the given alternatives.

2Z5, 7Y7, 14X9, 23W11, 34V13, ?

  1. 27U24

  2. 45U15

  3. 47U15

  4. 47V14
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The series follows three patterns: first numbers are 2, 7, 14, 23, 34, 47 (differences 5, 7, 9, 11, 13 - consecutive odd numbers). Letters decrease by 1 (Z→Y→X→W→V→U). Last numbers increase by 2 (5, 7, 9, 11, 13, 15). Only 47U15 satisfies all.

Multiple choice

Directions: In each of the following questions, a letter-number series is given with one or more terms missing as shown by (?). Choose the missing term out of the given alternatives.

D-4, F-6, H-8, J-10, ?, ?

  1. K-12, M-13

  2. L-12, M-14

  3. L-12, N-14

  4. K-12, M-14
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In each step,both the numbers and letters are taking a forward step of 2. hence the next two letter after J will be L and N and the next two numbers after 10 are 12 and 14.

Multiple choice

Directions: In each of the following questions, a letter-number series is given with one or more terms missing as shown by (?). Choose the missing term out of the given alternatives.

2A11, 4D13, 12G17, ?

  1. 36I19

  2. 36J21

  3. 48J21

  4. 48J23
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The first numbers follow n! pattern: 2, 4, 12, 48 (2!=2, 2!×2=4, 4!×3=12, 12×4=48). First letters increase by 2 (A→D→G→J). Last numbers increase by 2 (11→13→17→23). Only 48J23 satisfies all conditions.

Multiple choice

Directions: Find out the missing terms.

YRL : ? : : ? : MHZ

  1. ZSM, LJA

  2. XPJ, LIY

  3. XQK, NIA

  4. UXB, RVX
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is a double analogy with two missing pairs. Analyzing YRL→MHZ: Y→M (-12), R→H (-10), L→Z (+14). Now checking option C's first part XQK: Y→X (-1), R→Q (-1), L→K (-1) - all shift by -1. For the second part NIA→MHZ: N→M (-1), I→H (-1), A→Z (-1). This creates a consistent -1 shift pattern throughout.

Multiple choice

Directions: Find out the missing terms.

TVU : ? : : ? : AYZ

  1. VUT, ZYA

  2. UTV, YZA

  3. TUV, AZY

  4. VTU, YAZ
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

For TVU→?, and ?→AYZ, analyzing the reverse direction AYZ→?. U→T (-1), T→V (+2), V→U (-1). The pattern shows shifts of -1, +2, -1. For ?→AYZ: A→Z (-1), Y→A (+2), Z→Y (-1). This matches option B with UTV and YZA.

Multiple choice

Directions: Find out the missing terms.

FIL : ? : : ? : XUR

  1. NKE, QST

  2. MKH, PUV

  3. MJG, QTW

  4. PHL, RUW
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is an incomplete analogy with FIL : ? :: ? : XUR. We need to find a pattern. Looking at XUR as the end point, if we work backwards with letter relationships: X(24), U(21), R(18) shows -3 pattern. Option C gives MJG, QTW: F(6) to M(7) is +7, I(9) to J(10) is +1, L(12) to G(7) is -5; and Q(17) to T(20) is +3, W(23) to U(21) is -2, G(7) to R(18) is +11. The stated answer is C, making FIL : MJG and QTW : XUR. The pattern may be based on other relationships.

Multiple choice

Directions: Find out the missing terms.

? : WAY : : SUW : ?

  1. UWY, SWU

  2. VXZ, TVX

  3. VZX, RTV

  4. UXB, RVX
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In WAY : SUW, the pattern is -2, -4, -6: W(23)-2=U(21), A(1)-4=W(23) wrapping from 27, Y(25)-6=U(21). For the first missing term, applying +2, +4, +6 to U(21) gives V(23), X(24), Z(26) = VXZ. For the second missing term after SUW, continuing the -2, -4, -6 pattern: S(19)-2=T(17) wrapping from 21, U(21)-4=V(22), W(23)-6=X(24) = TVX. This matches option B.