Brain Test Level 251
Question & Solution
The question asks you to complete the sequence: 1, 3, 5, 7, __.
Step-by-Step Guide
1. Observe the numbers provided: 1, 3, 5, 7.
2. This is a simple arithmetic progression of consecutive odd numbers, where each number is 2 greater than the previous one.
3. The number following 7 in this sequence is 7 + 2 = 9.
4. Input 9 into the blank space to complete the level.
DIFFICULTY
Medium
PRO TIP
Just follow the odd number progression.