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Mixed Series - Intermediate Level: letter-symbol mix INTERMEDIATE

Exam-focused quick response training ★ worksheet: 20 intermediate-level mixed series questions. Worksheet 13 of 30 targets letter-symbol mix. Build proficiency in alternating series, complex sequences, multi-rule patterns with detailed solutions. Ideal for mid-level competitive exam preparation.

📝 Worksheet 13 of 30 • 20 questions • ⏱️ Estimated time: 20 minutes • 🎯 Intermediate level

What you'll learn in this worksheet:
Your progress through Mixed Series
Worksheet 13 of 30 (43% complete)

Question 1

Find the next item in the series: 4, M, 3, J, 3, G, 7, ?
Two independent patterns: numbers follow fibonacci progression, letters follow backward pattern. Next letter is D
double, interleaved

Question 2

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

Question 3

Find the next item in the series: 1, A, 8, B, 27, C, 64, ?
Alternating perfect cubes (starting from 1³=1) and corresponding letters. Next is D
cubes, letters

Question 4

Find the next item in the series: E, 6, G, 8, I, 10, ?
Alternating between letters and their positions in alphabet (A=1, B=2, ...). Letters advance by 1 each time. Next is K
alphabet, position

Question 5

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

Question 6

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

Question 7

Find the next item in the series: 25, S, 36, Q, 49, O, ?
Alternating series: numbers follow squares of 5, 6, ... pattern, letters follow backward by 2 pattern. Next number is 64
alternating, basic

Question 8

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

Question 9

Find the next item in the series: 4, A, 8, Y, 16, W, ?
Alternating series: numbers follow multiplying by 2 pattern, letters follow backward by 2 pattern. Next number is 32
alternating, basic

Question 10

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 11

Find the next item in the series: 9, C, 16, D, 25, E, 36, F, ?
Alternating perfect squares (starting from 3²=9) and corresponding letters. Next is 49
squares, letters

Question 12

Find the next item in the series: B, 8, C, 27, D, 64, ?
Alternating perfect cubes (starting from 2³=8) and corresponding letters. Next is E
cubes, letters

Question 13

Find the next item in the series: M, 4, P, 16, S, 64, ?
Numbers multiply by 4, letters advance by 3. Next is V
geometric, alphabet

Question 14

Find the next item in the series: 1, B, 3, E, 8, M, ?
Fibonacci sequence (1, 2, ...) with alternating numbers/letters. Next Fibonacci number is 21, so answer is 21
fibonacci, letters

Question 15

Find the next item in the series: C, 9, D, 16, E, 25, ?
Alternating perfect squares (starting from 3²=9) and corresponding letters. Next is F
squares, letters

Question 16

Find the next item in the series: I, 24, O, 120, U, ?
Alternating factorial numbers (24, 120, ...) and vowels in forward order. Next is 720
factorial, vowels

Question 17

Find the next item in the series: 5, F, 15, P, 45, T, ?
Numbers multiply by 3, letters advance by 3. Next is 135
geometric, alphabet

Question 18

Find the next item in the series: 37, C, 41, B, 43, Z, ?
Alternating prime numbers and consonants. Next is 47
primes, consonants

Question 19

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

Question 20

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