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Alphanumeric Series - Beginner-Intermediate Level: alternating letters-numbers BEGINNER-INTERMEDIATE

This deep dive ★ worksheet contains 20 beginner-intermediate-level alphanumeric series problems. Worksheet 11 of 30 focuses on alternating letters-numbers. Practice character patterns, alphanumeric patterns, mixed character logic with our step-by-step solutions. Difficulty: building on fundamentals with moderate challenges. Recommended for developing learners.

📝 Worksheet 11 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Beginner-intermediate level

What you'll learn in this worksheet:
Your progress through Alphanumeric Series
Worksheet 11 of 30 (36% complete)

Question 1

Find the next term if odd position letters advance by 3, even position numbers follow (i+2)*2: P4, U4, V8, A8, B12
Odd-indexed positions: letter advances by 3 from P, number = (position+2)×2 = 14 at position 5. Next term: E14.
embed_logic, series

Question 2

Find the next group in the series: LM1112, NO1314, QR1516
Groups: Letter steps follow Fibonacci (1,2,3,5), numbers increase by 2 each time. Next is VW1718.
series, grouped

Question 3

What is the next term in the sequence: G0, I3, K6, M9, O2?
Letters advance by 2 (starting G), digits advance by 3 (mod 10).
multi_skip, double_encode

Question 4

Find the term that does NOT follow the series: F2, H4, J6, L8, P10
The series follows +2 for both letter and number. Position 5: should be N, but given term is P (P10).
series, find wrong

Question 5

What is the next term in the sequence: D5, F8, H1, J4, L7?
Letters advance by 2 (starting D), digits advance by 3 (mod 10).
multi_skip, double_encode

Question 6

Find the next term in the series: A0!, C3@, E6#, G9$, I2%
Letters advance by +2 (mod 26), digits advance by +3 (mod 10), symbols cycle through ['!', '@', '#', '$', '%']. Next term: letter=K, digit=5, symbol=^ → K5^.
symbol, group, series

Question 7

In the sequence: F3$, G4*, H5!, I6@, J7#, K8$, L9*, which term is three places after the term with digit '2'?
Locate digit 2 in the sequence (position 2), then jump 3 places forward to position 5: J7#.
relative, position, series

Question 8

What comes next in the hybrid series: E10, G20, K40, O80
Letters move by steps: 2, 2, 4, 4, numbers double each time. Next step +6 for letter, ×2 for number.
series, hybrid

Question 9

Find the next term in the series: E1, G3, I5, K7
This series alternates letters and numbers, each increasing by 2.
Last term: K7 → next: M9.
series, next term

Question 10

Find the next palindromic term in the pattern: QRQ, RSR, STS, TUT
Each term is a 3-letter palindrome, with both outer and middle letters moving forward by 1 each time.
series, palindrome

Question 11

In the sequence: I4!, J5@, K6#, L7$, M8*, N9!, O0@, which term is three places after the term with digit '2'?
Locate digit 2 in the sequence (position 2), then jump 3 places forward to position 5: M8*.
relative, position, series

Question 12

What comes next in the series: H2, K4, P8, W16
Letters advance by increasing steps: 2, 3, 5, 7; numbers double each time.
series, jump

Question 13

What comes next in the hybrid series: F4, K8, U16, L32
Letters move by steps: 2, 5, 10, 17, numbers double each time. Next step +26 for letter, ×2 for number.
series, hybrid

Question 14

What comes next in the series: C1, G2, P4, F8
Letters advance by increasing steps: 1, 4, 9, 16; numbers double each time.
series, jump

Question 15

What is the next term in the sequence: J4, L7, N0, P3, R6?
Letters advance by 2 (starting J), digits advance by 3 (mod 10).
multi_skip, double_encode

Question 16

What is the next term in the sequence: E4, G7, I0, K3, M6?
Letters advance by 2 (starting E), digits advance by 3 (mod 10).
multi_skip, double_encode

Question 17

What comes next: H1, K4, N7, Q10 ?
Letters move +3, numbers +3. Continue pattern: next is T13.
series, pattern

Question 18

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 19

Find the next term in the series: D1, G4, J7, M10
This series alternates letters and numbers, each increasing by 3.
Last term: M10 → next: P13.
series, next term

Question 20

What is the next term in the sequence: E0, G3, I6, K9, M2?
Letters advance by 2 (starting E), digits advance by 3 (mod 10).
multi_skip, double_encode
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