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Mixed Series - Expert Level: letter-symbol mix EXPERT

Comprehensive self assessment worksheet covering 20 expert-level mixed series problems. Worksheet 28 of 30 emphasizes letter-symbol mix. Master complex sequences, multi-rule patterns, hybrid series through detailed explanations. Difficulty: challenging problems and time-bound practice. Tailored for expert-level preparation.

📝 Worksheet 28 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Expert level

What you'll learn in this worksheet:
Your progress through Mixed Series
Worksheet 28 of 30 (93% complete)

Question 1

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

Question 2

Find the next item in the series: 1, A, 2, E, 6, ?
Alternating factorial numbers (1, 2, ...) and vowels in forward order. Next is I
factorial, vowels

Question 3

Find the next item in the series: 9, K, 13, J, 17, I, ?
Alternating series: numbers follow increasing by 4 pattern, letters follow backward by 1 pattern. Next number is 21
alternating, basic

Question 4

Find the next item in the series: 10, K, 13, I, 16, G, ?
Alternating series: numbers follow increasing by 3 pattern, letters follow backward by 2 pattern. Next number is 19
alternating, basic

Question 5

Find the next item in the series: 3, J, 7, L, 11, N, ?
Alternating series: numbers follow Fibonacci-style (3, 4, ...) pattern, letters follow forward by 2 pattern. Next number is 18
alternating, basic

Question 6

Find the next item in the series: 1, A, 8, B, 27, ?
Alternating perfect cubes (starting from 1³=1) and corresponding letters. Next is C
cubes, letters

Question 7

Find the next item in the series: 2, A, 2, E, 2, I, 4, ?
Two independent patterns: numbers follow fibonacci progression, letters follow vowel-cycle pattern. Next letter is O
double, interleaved

Question 8

Find the next item in the series: 16, R, 25, P, 36, N, ?
Alternating series: numbers follow squares of 4, 5, ... pattern, letters follow backward by 2 pattern. Next number is 49
alternating, basic

Question 9

Find the next item in the series: 10, A, 13, I, 16, U, ?
Numbers increase by 3, vowels skip pattern A-E-I-O-U pattern. Next is 19
arithmetic, vowels

Question 10

Find the next item in the series: 1, A, 4, B, 9, C, 16, ?
Alternating perfect squares (starting from 1²=1) and corresponding letters. Next is D
squares, letters

Question 11

Find the next item in the series: A, 27, C, 81, I, 243, A, ?
Alternating powers of 3 (3^3=27, 3^4=81, ...) and corresponding letters. Next is 729
power, exponential, letters

Question 12

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 13

Find the next item in the series: 7, N, 9, L, 11, J, ?
Alternating series: numbers follow increasing by 2 pattern, letters follow backward by 2 pattern. Next number is 13
alternating, basic

Question 14

Find the next item in the series: 4, A, 3, E, 3, I, 7, ?
Two independent patterns: numbers follow fibonacci progression, letters follow vowel-cycle pattern. Next letter is O
double, interleaved

Question 15

Find the next item in the series: 3, E, 8, M, 21, ?
Fibonacci sequence (3, 5, ...) with alternating numbers/letters. Next Fibonacci number is 34, so answer is H
fibonacci, letters

Question 16

Find the next item in the series: 2, L, 4, H, 8, D, 16, ?
Two independent patterns: numbers follow geometric progression, letters follow backward pattern. Next letter is Z
double, interleaved

Question 17

Find the next item in the series: 23, S, 29, R, 31, Q, ?
Alternating prime numbers and consonants. Next is 37
primes, consonants

Question 18

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 19

Find the next item in the series: 5, F, 10, K, 20, U, ?
Numbers multiply by 2, letters advance by 2. Next is 40
geometric, alphabet

Question 20

Find the next item in the series: 59, F, 61, G, ?
Alternating prime numbers and consonants. Next is 67
primes, consonants
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