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Alphanumeric Series - Intermediate Level: dual progression INTERMEDIATE

Boost your speed and accuracy with this adaptive style 📈 worksheet. Worksheet 15 of 30 presents 20 intermediate-level alphanumeric series problems. Focus on dual progression while practicing alphanumeric logic, mixed series, letter-number sequences. Difficulty: moderate complexity with mixed patterns. Perfect for mid-level test takers.

📝 Worksheet 15 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Intermediate level

What you'll learn in this worksheet:
Your progress through Alphanumeric Series
Worksheet 15 of 30 (50% complete)

Question 1

Find the next palindromic term in the pattern: ABA, BCB, CDC, DED
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: U1, Z6, E11, J16
Letters move by +5, number increments by 5. Wraparound used for letters.
series, modular

Question 3

Find the next term if odd position letters advance by 3, even position numbers follow (i+2)*2: E4, J4, K8, P8, Q12
Odd-indexed positions: letter advances by 3 from E, number = (position+2)×2 = 14 at position 5. Next term: T14.
embed_logic, series

Question 4

Find the next group in the series: PQ2021, QR2223, ST2526
Groups: Alternating steps (+2,+1,+2,+1 for letters; +3,+2,+3,+2 for numbers). Next is TU2728.
series, grouped

Question 5

Find the term that does NOT follow the series: C2, E4, H6, I8, K10
The series follows +2 for both letter and number. Position 3: should be G, but given term is H (H6).
series, find wrong

Question 6

Find the next term in the series: B3, C6, D9, E36
Pattern: Letter increases by 1 each position. Numbers follow: start 2, then +1=3, ×2=6, +3=9, ×4=36, +5=41...
Next: Letter = F, Applying +5 to 36 = 41 → F41
series, position

Question 7

Find the next group in the series: JK1112, MN1415, PQ1718
Groups: Each is 2 letters and 2 digits, increasing by 3 each time. Next is ST2021.
series, grouped

Question 8

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

Question 9

Fill in the missing term: Z11, X9, V7, ?, R3
Letters move back by 2; numbers -2 each time.
series, reverse

Question 10

What comes next in the series: H3, K6, P12, W24
Letters advance by increasing steps: 2, 3, 5, 7; numbers double each time.
series, jump

Question 11

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 12

Find the next group in the series: JK2021, MN2324, PQ2627
Groups: Each is 2 letters and 2 digits, increasing by 3 each time. Next is ST2930.
series, grouped

Question 13

Find the missing term in the series: H2, J3, L4, ?, P6
Each step adds 2 to letter and 1 to number.
The missing term comes fourth: N5.
series, missing term

Question 14

In sequence: A7, C6, E5, G4, I3, K2, M1, what is the term 2 positions before the 6th term?
Reference required position backward.
reverse, crossref, series

Question 15

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 16

Find the next term: F1, G4, H9, I16
Number is term position squared (1,4,9,16,25). Letter increases by one each time.
series, math transform

Question 17

Fill in the missing term: Y11, W9, U7, ?, Q3
Letters move back by 2; numbers -2 each time.
series, reverse

Question 18

What comes next in the series: C1, G2, M4, U8
Letters advance by increasing steps: 2, 4, 6, 8; numbers double each time.
series, jump

Question 19

Find the next group in the series: NO1415, PQ1617, ST1819
Groups: Letter steps follow Fibonacci (1,2,3,5), numbers increase by 2 each time. Next is XY2021.
series, grouped

Question 20

Find the next term: J1, M4, P7, S10
Letters move by +3, number increments by 3. Wraparound used for letters.
series, modular
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