Do we need to have:
(1) at least a card of each triplet (suit AND rank AND deck design)? 520 cards total
(2) or at least a card of each suit (at least 4 cards) AND at least a card of each rank (at least 13 cards) AND at least a card of each deck design (at least 10 cards)?
I understood (1) but I guess I am wrong, can someone confirm?
Many thanks in advance
Problem 796
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urimend
- Administrator
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urimend
- Administrator
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Re: Problem 796
Thanks for raising the issue.
The phrasing of the problem has been updated to make this point clearer.
The phrasing of the problem has been updated to make this point clearer.
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deWalk
- Posts: 7
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Re: Problem 796
I'm puzzled by the wording "without replacement": shouldn't it be "with replacement" (else the one deck in the example would be exhausted after 54 cards and the solution there would be something under 54 cards)?
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neverforget
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Re: Problem 796
Cards are drawn without replacement. If you draw all the cards, you would automatically have a card of every rank. Which is why the expectation is lower, since sometimes (actually always) you can get a card in each rank without drawing the entire deck of cards.
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deWalk
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Re: Problem 796
Thx. I overlooked the decimal point on my mobile phone and the then higher number led me to replacement.
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hacatu
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Re: Problem 796
The description mentions jokers don't have a suite or rank, but do they count towards the number of decks seen or not?
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neverforget
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Re: Problem 796
Yes, they do count.hacatu wrote: Mon May 02, 2022 4:11 am The description mentions jokers don't have a suite or rank, but do they count towards the number of decks seen or not?