Brain Test Level 405
Brain Test Level 405 Solution
The question asks you to find the missing number in the sequence:
5 + 3 = 28
9 + 1 = 810
8 + 6 = 214
7 + 3 = ?
Solution
The pattern uses two operations: Subtraction (A - B) followed by Addition (A + B).
For 5 + 3 = 28:
(5 - 3) = 2
(5 + 3) = 8
Result: 28
For 7 + 3 = ?:
(7 - 3) = 4
(7 + 3) = 10
Combine the results to get 410.
The missing number is 410.
DIFFICULTY
Medium
PRO TIP
Look closely at the numbers. The answer is derived from calculating both the difference and the sum of the two inputs.