Beginner

An Extra Lock

A man saw his bike locked up in a bike rack, so he went to a nearby store and bought a new lock. When he returned, he put another lock on the bike and walked away without riding it. Why?

Let’s unravel your preconceptions, one by one.

View Hints

3 Levels of Hints

Take it little by little, just as much as you need.

Hint 1

What would he want to prevent from happening after he left?

Hint 2

The lock that was originally on the bike wasn’t the one the man had put there.

Hint 3

He made sure that even if the person with the key to the first lock returned, they could not take the bicycle away.

Check the Answer

The truth behind this mystery

It was his own stolen bike. It was chained to the fence with the thief’s lock, so he couldn’t just ride it home. He added his own lock to prevent it from being stolen again, then went to report it to the police.

If you notice this, you’ve got it right

He found his stolen bike but couldn’t take it home because it was secured with someone else’s lock. He added his own lock to prevent the thief from taking it again.

Suggested questions and answers for group play
Did the man put the first lock on?
No.
Was it the man’s own bicycle that had been stolen?
Yes.
Was the additional lock added to prevent it from being stolen again?
Yes.
Did he leave the scene to consult with the police?
Yes.

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Would you like to see the answer?

The solution is written below. If you want to think about it a little more, you can go back to the problem or the hints.