1.

A person draws a card from a pack, replaces it shuffles the pack, again draws a card, replace it and draws again. This he does unitl he draw a heart. The probability that he will have to make at least four draws is:

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A person draws a card from a pack, replaces it shuffles the pack, again draws a card, replace it and draws again. This he does unitl he draw a heart. The probability that he will have to make at least four draws is:



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