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Mixed Series - Beginner Level: alternating series BEGINNER

Exam-focused quick revision round worksheet: 20 beginner-level mixed series questions. Worksheet 3 of 30 targets alternating series. Build proficiency in symbol sequences, mixed character series, pattern recognition with detailed solutions. Ideal for entry-level competitive exam preparation.

📝 Worksheet 3 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Beginner level

What you'll learn in this worksheet:
Your progress through Mixed Series
Worksheet 3 of 30 (10% complete)

Question 1

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

Question 2

Find the next item in the series: 9, A, 12, I, 15, U, ?
Numbers increase by 3, vowels skip pattern A-E-I-O-U pattern. Next is 18
arithmetic, vowels

Question 3

Find the next item in the series: 9, H, 16, K, 25, N, ?
Alternating series: numbers follow squares of 3, 4, ... pattern, letters follow forward by 3 pattern. Next number is 36
alternating, basic

Question 4

Find the next item in the series: A, 7, E, 11, I, 15, ?
Numbers increase by 4, vowels cycle through A-E-I-O-U pattern. Next is O
arithmetic, vowels

Question 5

Find the next item in the series: C, 5, H, 13, ?
Fibonacci sequence (3, 5, ...) with alternating numbers/letters. Next Fibonacci number is 21, so answer is U
fibonacci, letters

Question 6

Find the next item in the series: 1, C, 3, E, 8, G, ?
Fibonacci sequence (1, 2, ...) with position-based letters. Next Fibonacci number is 21, so answer is 21
fibonacci, letters

Question 7

Find the next item in the series: A, 2, I, 6, U, 10, ?
Numbers increase by 4, vowels skip pattern A-E-I-O-U pattern. Next is E
arithmetic, vowels

Question 8

Find the next item in the series: V, 13, W, 17, X, ?
Alternating prime numbers and consonants. Next is 19
primes, consonants

Question 9

Find the next item in the series: T, 59, V, 61, ?
Alternating prime numbers and consonants. Next is W
primes, consonants

Question 10

Find the next item in the series: 4, A, 4, E, 4, I, 8, ?
Two independent patterns: numbers follow fibonacci progression, letters follow vowel-cycle pattern. Next letter is O
double, interleaved

Question 11

Find the next item in the series: 3, U, 5, O, 7, I, ?
Numbers increase by 2, vowels reverse A-E-I-O-U pattern. Next is 9
arithmetic, vowels

Question 12

Find the next item in the series: 16, D, 25, E, 36, F, 49, G, ?
Alternating perfect squares (starting from 4²=16) and corresponding letters. Next is 64
squares, letters

Question 13

Find the next item in the series: B, 3, E, 8, M, ?
Fibonacci sequence (2, 3, ...) with alternating numbers/letters. Next Fibonacci number is 21, so answer is 21
fibonacci, letters

Question 14

Find the next item in the series: D, 5, F, 7, H, 9, J, ?
Alternating between letters and their positions in alphabet (A=1, B=2, ...). Letters advance by 2 each time. Next is 11
alphabet, position

Question 15

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 16

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

Question 17

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

Question 18

Find the next item in the series: 31, D, 37, F, 41, ?
Alternating prime numbers and consonants. Next is G
primes, consonants

Question 19

Find the next item in the series: O, 3, R, 6, U, 12, ?
Numbers multiply by 2, letters advance by 3. Next is X
geometric, alphabet

Question 20

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 3 each time. Next is O
alphabet, position
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