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 term: 2, 3, 5, 9, 17, __?
Answer: 33
Each term = previous term × 2 − 1: 2→3(×2−1), 3→5, 5→9, 9→17, 17→33.
Find the missing number: 4, 12, 36, 108, __, 972?
Answer: 324
Each term is multiplied by 3; 108 × 3 = 324.
What comes next: 1, 3, 6, 10, 15, __?
Answer: 21
These are triangular numbers; differences are +2, +3, +4, +5, +6; 15+6 = 21.
Identify the next number: 256, 128, 64, 32, __?
Answer: 16
Each term is halved; 32 ÷ 2 = 16.
What is the missing term: 11, 22, 44, 88, __, 352?
Answer: 176
Each term is doubled; 88 × 2 = 176.
Find the next term in the sequence: 0, 1, 4, 9, 16, 25, __?
Answer: 36
These are square numbers starting from 0²; the next is 6² = 36.