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 is the missing number: 120, 60, 40, 30, __, 20?
Answer: 24
120/1=120, 120/2=60, 120/3=40, 120/4=30, 120/5=24, 120/6=20. Missing = 24.
What comes next: 1, 3, 7, 15, 31, __?
Answer: 63
Each term = (previous × 2) + 1. 31 × 2 + 1 = 63.
Find the missing number: 6, 11, 21, 41, __, 161?
Answer: 81
Each term = (previous × 2) − 1. 41 × 2 − 1 = 81.
What is the next term: 0.5, 1, 2, 4, 8, __?
Answer: 16
Each term is doubled: 8 × 2 = 16.
What is the missing number: 100, 91, 83, 76, 70, __?
Answer: 65
Differences: −9, −8, −7, −6, −5. Next = 70 − 5 = 65.
What comes next: 2, 5, 11, 23, 47, __?
Answer: 95
Each term = (previous × 2) + 1. 47 × 2 + 1 = 95.