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 next number: 256, 64, 16, 4, __?
Answer: 1
Each term is divided by 4: 256/4=64, 64/4=16, 16/4=4, 4/4=1.
Find the missing number: 2, 9, 28, __, 126?
Answer: 65
Pattern: 1³+1=2, 2³+1=9, 3³+1=28, 4³+1=65, 5³+1=126. Missing = 4³+1 = 65.
What is the next term: 17, 13, 9, 5, __?
Answer: 1
The sequence decreases by 4 each time: 5 − 4 = 1.
Find the missing number: 1, 2, 4, 7, 11, 16, __?
Answer: 22
Differences: +1, +2, +3, +4, +5, +6. Next = 16 + 6 = 22.
What comes next: 5, 15, 45, 135, __?
Answer: 405
Each term is multiplied by 3: 135 × 3 = 405.
Find the next number: 4, 9, 16, 25, 36, __?
Answer: 49
These are perfect squares: 2², 3², 4², 5², 6², 7². Next = 7² = 49.