Description
You borrow three coins, and place them in a plastic case. You put a paper on the coins and you close the case. Borrow a pancil and...Use it to transfix the coins.
Remove the pencil, the paper, which is pierced, and finally show the coins. They are untouched.
Of course, you can give the case for inspection.
Remove the pencil, the paper, which is pierced, and finally show the coins. They are untouched.
Of course, you can give the case for inspection.
15 Pts
