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Mixed Series - Intermediate Level: letter-number combinations INTERMEDIATE

Master mixed series concepts through this excellence pursuit practice set. Worksheet 16 of 30 contains 20 intermediate-level problems. Deep dive into letter-number combinations while learning letter-number combinations, symbol sequences, mixed character series. Recommended for mid-level learners aiming for moderate complexity with mixed patterns.

📝 Worksheet 16 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Intermediate level

What you'll learn in this worksheet:
Your progress through Mixed Series
Worksheet 16 of 30 (53% complete)

Question 1

Find the next item in the series: 2, D, 6, F, 18, H, ?
Alternating series: numbers follow multiplying by 3 pattern, letters follow forward by 2 pattern. Next number is 54
alternating, basic

Question 2

Find the next item in the series: H, 13, U, 34, ?
Fibonacci sequence (8, 13, ...) with alternating numbers/letters. Next Fibonacci number is 55, so answer is C
fibonacci, letters

Question 3

Find the next item in the series: 10, K, 12, M, 14, ?
Alternating between letters and their positions in alphabet (A=1, B=2, ...). Letters advance by 2 each time. Next is O
alphabet, position

Question 4

Find the next item in the series: 25, G, 36, I, 49, ?
Alternating perfect squares (starting from 5²=25) and position-based letters. Next is K
squares, letters

Question 5

Find the next item in the series: 2, C, 5, Z, 8, W, ?
Alternating series: numbers follow increasing by 3 pattern, letters follow backward by 3 pattern. Next number is 11
alternating, basic

Question 6

Find the next item in the series: M, 5, N, 7, P, 11, ?
Alternating prime numbers and consonants. Next is Q
primes, consonants

Question 7

Find the next item in the series: A, 27, C, 81, I, 243, ?
Alternating powers of 3 (3^3=27, 3^4=81, ...) and corresponding letters. Next is A
power, exponential, letters

Question 8

Find the next item in the series: 3, E, 8, M, ?
Fibonacci sequence (3, 5, ...) with alternating numbers/letters. Next Fibonacci number is 21, so answer is 21
fibonacci, letters

Question 9

Find the next item in the series: C, 27, D, 64, E, 125, F, ?
Alternating perfect cubes (starting from 3³=27) and corresponding letters. Next is 216
cubes, letters

Question 10

Find the next item in the series: I, 9, A, 27, C, ?
Alternating powers of 3 (3^2=9, 3^3=27, ...) and corresponding letters. Next is 81
power, exponential, letters

Question 11

Find the next item in the series: 16, F, 25, H, 36, ?
Alternating perfect squares (starting from 4²=16) and position-based letters. Next is J
squares, letters

Question 12

Find the next item in the series: 1, Q, 3, U, 3, Y, 4, ?
Two independent patterns: numbers follow fibonacci progression, letters follow forward pattern. Next letter is C
double, interleaved

Question 13

Find the next item in the series: 10, A, 15, I, 20, U, ?
Numbers increase by 5, vowels skip pattern A-E-I-O-U pattern. Next is 25
arithmetic, vowels

Question 14

Find the next item in the series: A, 8, I, 11, U, 14, ?
Numbers increase by 3, vowels skip pattern A-E-I-O-U pattern. Next is E
arithmetic, vowels

Question 15

Find the next item in the series: 2, O, 6, I, 24, ?
Alternating factorial numbers (2, 6, ...) and vowels in reverse order. Next is E
factorial, vowels

Question 16

Find the next item in the series: 4, D, 9, F, 16, ?
Alternating perfect squares (starting from 2²=4) and position-based letters. Next is H
squares, letters

Question 17

Find the next item in the series: 1, C, 4, E, 9, G, ?
Alternating perfect squares (starting from 1²=1) and position-based letters. Next is 16
squares, letters

Question 18

Find the next item in the series: 4, E, 8, I, 16, Q, ?
Numbers multiply by 2, letters advance by 2. Next is 32
geometric, alphabet

Question 19

Find the next item in the series: 64, D, 125, E, 216, F, 343, ?
Alternating perfect cubes (starting from 4³=64) and corresponding letters. Next is G
cubes, letters

Question 20

Find the next item in the series: F, 7, H, 9, J, 11, ?
Alternating between letters and their positions in alphabet (A=1, B=2, ...). Letters advance by 2 each time. Next is L
alphabet, position
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