Number Sequences and Patterns Flashcards
6 cards from real Civil Service Numerical Reasoning Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Number Sequences and Patterns flashcards as text
What comes next: 2, 3, 5, 8, 13, __?
Answer: 21
This is the Fibonacci sequence — each term is the sum of the two preceding terms: 8 + 13 = 21.
What is the missing number: 5, 10, 20, __, 80?
Answer: 40
Each term is multiplied by 2: 5, 10, 20, 40, 80.
What is the next number: 1, 8, 27, 64, __?
Answer: 125
These are cubes: 1³, 2³, 3³, 4³, 5³. Next = 5³ = 125.
Find the missing term: 45, 40, 34, 27, __, 10?
Answer: 19
Differences: −5, −6, −7, −8, −9. From 27: 27 − 8 = 19.
What comes next in the sequence: 2, 6, 18, 54, __?
Answer: 162
Each term is multiplied by 3: 2, 6, 18, 54, 162.
What is the missing number: 1, 1, 2, 3, 5, 8, __, 21?
Answer: 13
Fibonacci sequence: each term = sum of the two before it. 5 + 8 = 13.