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Mixed Series - Advanced Level: series completion ADVANCED

Boost your speed and accuracy with this high difficulty set 📈 worksheet. Worksheet 25 of 30 presents 20 advanced-level mixed series problems. Focus on series completion while practicing mixed character series, pattern recognition, alternating series. Difficulty: complex scenarios and multi-step problems. Perfect for advanced test takers.

📝 Worksheet 25 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Advanced level

What you'll learn in this worksheet:
Your progress through Mixed Series
Worksheet 25 of 30 (83% complete)

Question 1

Find the next item in the series: 6, E, 24, A, 120, ?
Alternating factorial numbers (6, 24, ...) and vowels in reverse order. Next is U
factorial, vowels

Question 2

Find the next item in the series: 14, O, 16, Q, 18, S, ?
Alternating between letters and their positions in alphabet (A=1, B=2, ...). Letters advance by 3 each time. Next is 20
alphabet, position

Question 3

Find the next item in the series: 41, N, 43, M, 47, ?
Alternating prime numbers and consonants. Next is L
primes, consonants

Question 4

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 5

Find the next item in the series: 5, P, 8, S, 11, V, ?
Alternating series: numbers follow increasing by 3 pattern, letters follow forward by 3 pattern. Next number is 14
alternating, basic

Question 6

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

Question 7

Find the next item in the series: 1, A, 4, E, 4, I, 5, ?
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: P, 16, L, 64, V, 256, J, ?
Alternating powers of 4 (4^2=16, 4^3=64, ...) and corresponding letters. Next is 1024
power, exponential, letters

Question 9

Find the next item in the series: 4, H, 8, K, 16, N, ?
Alternating series: numbers follow multiplying by 2 pattern, letters follow forward by 3 pattern. Next number is 32
alternating, basic

Question 10

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

Question 11

Find the next item in the series: A, 9, E, 11, I, 13, ?
Numbers increase by 2, vowels cycle through A-E-I-O-U pattern. Next is O
arithmetic, vowels

Question 12

Find the next item in the series: D, 4, H, 8, P, 16, F, ?
Alternating powers of 2 (2^2=4, 2^3=8, ...) and corresponding letters. Next is 32
power, exponential, letters

Question 13

Find the next item in the series: 9, T, 16, R, 25, P, ?
Alternating series: numbers follow squares of 3, 4, ... pattern, letters follow backward by 2 pattern. Next number is 36
alternating, basic

Question 14

Find the next item in the series: 5, H, 13, U, 34, ?
Fibonacci sequence (5, 8, ...) with alternating numbers/letters. Next Fibonacci number is 55, so answer is C
fibonacci, letters

Question 15

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

Question 16

Find the next item in the series: 4, K, 12, M, 36, O, ?
Numbers multiply by 3, letters advance by 2. Next is 108
geometric, alphabet

Question 17

Find the next item in the series: U, 4, O, 9, I, 14, ?
Numbers increase by 5, vowels reverse A-E-I-O-U pattern. Next is E
arithmetic, vowels

Question 18

Find the next item in the series: 9, I, 27, A, 81, C, 243, ?
Alternating powers of 3 (3^2=9, 3^3=27, ...) and corresponding letters. Next is I
power, exponential, letters

Question 19

Find the next item in the series: A, 2, C, 4, E, ?
Alternating between letters and their positions in alphabet (A=1, B=2, ...). Letters advance by 2 each time. Next is 6
alphabet, position

Question 20

Find the next item in the series: 9, R, 10, T, 11, V, ?
Alternating series: numbers follow increasing by 1 pattern, letters follow forward by 2 pattern. Next number is 12
alternating, basic
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