A note was left in a locked mailbox with no key found and no damage. How was the note placed inside?

Category: Mystery · Difficulty: medium

Hint: Consider alternative entry points on objects

Answer

Mailbox has hidden side opening

Explanation

Some mailboxes have concealed side or bottom openings for mail insertion, allowing notes without key or damage.

This is a medium mystery riddle — a moderate challenge for most people. The answer is Mailbox has hidden side opening.

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