Alphanumeric Series - Intermediate Level: letter-number sequences INTERMEDIATE

Comprehensive weakness targeting worksheet covering 20 intermediate-level alphanumeric series problems. Worksheet 18 of 30 emphasizes letter-number sequences. Master character patterns, alphanumeric patterns, mixed character logic through detailed explanations. Difficulty: moderate complexity with mixed patterns. Tailored for mid-level preparation.

📝 Worksheet 18 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Intermediate level

What you'll learn in this worksheet:

Achieve proficiency in character patterns by completing this worksheet
Develop strong alphanumeric patterns skills with practical problems
Improve your alphanumeric series solving speed through weakness targeting
Gain confidence in identifying mixed character logic patterns
Master real-world applications of letter-number sequences

Your progress through Alphanumeric Series

Worksheet 18 of 30 (60% complete)

Question 1

Find the next palindromic term in the pattern: RSR, STS, TUT, UVU

Each term is a 3-letter palindrome, with both outer and middle letters moving forward by 1 each time.

series, palindrome

Question 2

Find the next term: R, 7, T, 9, V, ?

Odd terms: letters +2; Even terms: numbers +2.

series, alternate

Question 3

In sequence: A7, C6, E5, G4, I3, K2, M1, what is the term 2 positions before the 5th term?

Reference required position backward.

reverse, crossref, series

Question 4

What comes next in the hybrid series: E6, G12, J24, O48

Letters move by steps: 1, 2, 3, 5, numbers double each time. Next step +8 for letter, ×2 for number.

series, hybrid

Question 5

Find the term that does NOT follow the series: C2, F5, K8, L11, O14

The series follows +3 for both letter and number. Position 3: should be I, but given term is K (K8).

series, find wrong

Question 6

Find the term that does NOT follow the series: J2, L4, N6, P8, T10

The series follows +2 for both letter and number. Position 5: should be R, but given term is T (T10).

series, find wrong

Question 7

Find the next term in the series: N1, O2, P3, Q5

Pattern: Letter increases by 1 each position. Numbers follow the pattern: 1, 2, 3, 5, 8... (each number after the first two is the sum of the two preceding numbers).
Next: Letter = R, Number = 8 → R8

series, position

Question 8

What comes next: H1, K4, N7, Q10 ?

Letters move +3, numbers +3. Continue pattern: next is T13.

series, pattern

Question 9

Find the next term: U1, V4, W9, X16

Number is term position squared (1,4,9,16,25). Letter increases by one each time.

series, math transform

Question 10

What comes next: G1, J4, M7, P10 ?

Letters move +3, numbers +3. Continue pattern: next is S13.

series, pattern

Question 11

Find the term that does NOT follow the series: E2, G4, K6, K8, M10

The series follows +2 for both letter and number. Position 3: should be I, but given term is K (K6).

series, find wrong

Question 12

What comes next in the hybrid series: D10, G20, N40, C80

Letters move by steps: 1, 3, 7, 15, numbers double each time. Next step +31 for letter, ×2 for number.

series, hybrid

Question 13

Find the next term: A1, H8, O15, V22

Letters move by +7, number increments by 7. Wraparound used for letters.

series, modular

Question 14

Find the next group in the series: DE1819, FG2021, IJ2223

Groups: Letter steps follow Fibonacci (1,2,3,5), numbers increase by 2 each time. Next is NO2425.

series, grouped

Question 15

Find the term that does NOT follow the series: E2, H5, M8, N11, Q14

The series follows +3 for both letter and number. Position 3: should be K, but given term is M (M8).

series, find wrong

Question 16

Fill in the missing term: W11, U9, S7, ?, O3

Letters move back by 2; numbers -2 each time.

series, reverse

Question 17

In sequence: A7, C6, E5, G4, I3, K2, M1, what is the term 2 positions before the 4th term?

Reference required position backward.

reverse, crossref, series

Question 18

Find the next term: G1, J4, M7, P10

Letters move by +3, number increments by 3. Wraparound used for letters.

series, modular

Question 19

Find the next term: R1, Y8, F15, M22

Letters move by +7, number increments by 7. Wraparound used for letters.

series, modular

Question 20

Find the next term in the series: H1, I4, J9, K16

Pattern: Letter increases by 1 each position, Number is the square of the position number.
Position 1: H1
Position 2: I4
Position 3: J9
Position 4: K16
Position 5: Letter = L, Number = 5² = 25 → L25

series, position

💪 Progress update: 58% complete. Worksheet 18 awaits!

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