You are given the choice of three gifts:
Inside one gift is a star; behind the others, bombs.
You can pick a gift, say No. 1,
and the Computer, who knows what's behind the gifts,
opens another gift, say No. 3, which has a bomb.
Then you can choose to keep your original choice, No.1,
or switch to choose the other gift, No.2.
Is it to your advantage to switch your choice?
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