From Psychologies · La Rédaction · · 40s
Math Challenge: Solve in 40 Seconds
A math puzzle traps you in 40 seconds with hidden parentheses.
In brief
A math puzzle traps you in 40 seconds with hidden parentheses. Solving 130 - (50 - (9 × 3 - 6)) requires careful attention to parentheses, not speed. Originally reported by Psychologies.
Daily Challenge
Solve this math puzzle in 40 seconds without falling into a trap.
“130 - (50 - (9 × 3 - 6))”
The Trap
Parentheses make this calculation tricky for many readers.
Why It's Hard
Your brain simplifies expressions too quickly, causing errors.
The Solution
Start with the innermost parentheses to avoid mistakes.
“130 - (50 - (27 - 6))”
Correct Answer
The final result is 107 after careful calculation.
“107”
Test Yourself
Share the puzzle with others to see who falls into the trap.
The one thing
Solving 130 - (50 - (9 × 3 - 6)) requires careful attention to parentheses, not speed.
