Brain Test Level 321
Question: Which number is missing?
The numbers shown follow a mathematical sequence based on their position.
The value of each number is the square of its position number (N x N).
1st number is 1 (1x1), 2nd number is 4 (2x2), 3rd is 9 (3x3), 4th is 16 (4x4), 5th is 25 (5x5), and 7th is 49 (7x7).
Solution:
The missing number is in the 6th position. Calculate 6 squared:
6 x 6 = 36.
Enter 36.
DIFFICULTY
Medium
PRO TIP
Square the position number.