Brain Test Level 520: Can you solve this, genius? 111 = 3 223 = 7 123 = ?
Brain Test Level 520
Screenshots

Quick Answer
Sum the digits of the number: 1 + 2 + 3 = 6. Enter 6 and tap the green checkmark.
Skills Tested
Step-by-Step Solution
- 1) Study the equations given in the puzzle.
- 2) Notice that each answer is the sum of the digits.
- 3) Apply the rule to the number 123.
- 4) Add 1, 2, and 3 to get 6.
- 5) Enter 6 and tap the green checkmark.
Hint
Reveal a hint
Add up the digits of each number.
Why It Works
The clever part is noticing the pattern: each answer is the sum of the digits in the number. Since 1 plus 1 plus 1 equals 3, the rule works. Applying it to 123 gives 1 plus 2 plus 3, which is 6.
Frequently asked questions
What is 123 equal to in Brain Test level 520?
Sum the digits 1 + 2 + 3 = 6, so 123 equals 6 in the riddle.
What is the answer to Brain Test level 520?
Sum the digits of the number: 1 + 2 + 3 = 6. Enter 6 and tap the green checkmark.
What is the rule in Brain Test level 520?
The rule is adding the digits of each number, so the answer is always the sum of the digits shown.
What is the trick in Brain Test level 520?
The trick is noticing the answer is just the sum of each number digits rather than a complex calculation.
Is there a video walkthrough for Brain Test level 520?
Yes, the embedded video on this page shows the digits being added and 6 entered on the answer key.
How do I finish Brain Test level 520?
Enter 6 on the keyboard and tap the green checkmark to submit the answer.
Why does 111 equal 3 in Brain Test level 520?
Because 1 + 1 + 1 equals 3, showing that the value is the sum of the digits in the number.