Brain Test Level 224
Question: Find the missing number.
Examine the sequence of numbers given. You have 1, 4, and 9.
Solution: Look for the mathematical pattern!
The numbers shown are the perfect squares of the first three integers:
- 1 = 1²
- 4 = 2²
- 9 = 3²
Following this pattern, the next number must be the square of 4.
Input 16.
DIFFICULTY
Medium
PRO TIP
What do 1, 4, and 9 have in common? They are all squares!