Number Series and Sequences Flashcards
6 cards from real Numerical Reasoning 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 Series and Sequences flashcards as text
Find the missing value: 3, 9, 27, __, 243?
Answer: 81
Each term is multiplied by 3; 27 × 3 = 81.
What comes next in the sequence: 2, 5, 10, 17, 26, __?
Answer: 37
Differences are +3, +5, +7, +9, +11; next term = 26 + 11 = 37.
Identify the next number: 64, 32, 16, 8, 4, __?
Answer: 2
Each term is divided by 2 (ratio = 0.5); 4 ÷ 2 = 2.
What is the missing term: 7, 14, 28, __, 112?
Answer: 56
Each term is multiplied by 2; 28 × 2 = 56.
Find the next term: 1, 8, 27, 64, 125, __?
Answer: 216
These are perfect cubes: 1³=1, 2³=8, 3³=27, 4³=64, 5³=125, 6³=216.
What number is missing: 50, 45, 39, 32, 24, __?
Answer: 15
Differences: −5, −6, −7, −8, −9; next term = 24 − 9 = 15.