Test 16 / 20
There are three closed doors: one hides a prize, and the other two are empty. Three participants, A, B, and C, each choose one door. The host then opens Participant C's door and reveals it is empty. The host asks Participant A if they would like to switch to Participant B's door. Should Participant A switch?
The Purpose: This puzzle exercises Statistical Reasoning and Cognitive Flexibility. It challenges the brain to look past initial intuition and process "new information" (the opened empty door) to re-evaluate the probability of success.
The Breakdown: Initially, each door has a 1/3 chance of having the prize. When Participant A picks a door, there is a 1/3 chance they are right and a 2/3 chance the prize is behind one of the other two doors (B or C).
The Logic: 1. Participant A’s door has a 1/3 probability of being correct.
2. The combined probability of Doors B and C is 2/3.
3. When the host "eliminates" Door C by showing it's empty, the entire 2/3 probability of that group shifts solely to Door B.
4. Therefore, switching to Door B doubles the winning odds from 1/3 to 2/3.
Free Logical Reasoning Test: How Sharp Is Your Mind?
This test focuses on pure logical deduction. Instead of complex numbers or visual shapes, you'll solve puzzles based on rules, relationships, and everyday scenarios. It’s an excellent mental workout to improve your analytical skills and keep your decision-making sharp! 🧠


