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We have a deck of cards numbered from to .
Some are grey and some are white.
The cards numbered and are grey.
The cards numbered , , and are white.

A card is drawn at random.
Let be the event that the drawn card is grey, and let be the probability of .
Let not be the event that the drawn card is not grey, and let not be the probability of not .We have a deck of cards numbered 1 to five some are grey and some are white'