Brain Broker

Three differences. Five seconds. Can you find them all?

Wrong equation. One match to move. Can you fix it?

Four mechanics. Exactly one is lying. Who is the liar?

Can you find 3 differences in 5 seconds? What's different?

Every object has a number. What is the last line?

They both sound sure. Who is right?

Same trains. Different pendulums. Choose 1, 2 or 3.

They can't agree. Which one is right?

Four pirates. Only one is honest. Who took the treasure?

Two V's show the rule. What goes under the last one?

One equation. One match to move. Can you fix it?

Four guards. One empty frame. Who took the painting?

The window is broken. Two of these kids are lying. Who broke it?

One of these bakers took the pie. Three of them are telling the truth. Who did it?

Three digits. One match. What is the biggest number you can make?

Only one straw reaches his mouth. What is he drinking?

A circle inside a right triangle. What is the radius?

How old is the son now?

A school geometry problem. Can you still solve it? What is x?

One identity solves this in seconds. What is x² + 1/x²?