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
What is the next number in the sequence: 3, 7, 11, 15, 19, __?
Answer: 23
The sequence increases by 4 each time; 19 + 4 = 23.
What is the missing number: 2, 6, 18, 54, __, 486?
Answer: 162
Each term is multiplied by 3; 54 × 3 = 162.
Find the next term: 1, 4, 9, 16, 25, __?
Answer: 36
These are perfect squares: 1²=1, 2²=4, 3²=9, 4²=16, 5²=25, 6²=36.
What number comes next: 100, 92, 84, 76, 68, __?
Answer: 60
The sequence decreases by 8 each time; 68 − 8 = 60.
Identify the missing number: 1, 1, 2, 3, 5, 8, 13, __?
Answer: 21
This is the Fibonacci sequence; each term equals the sum of the two preceding terms: 8+13 = 21.
What is the next number: 5, 10, 20, 40, 80, __?
Answer: 160
Each term is multiplied by 2 (doubling); 80 × 2 = 160.