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please can you help explainig that

thanks

How many people are needed to guarantee that at least two were born on the same day of the week and in the same month (perhaps in different years)?

- Thread starter hyderman
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- #1

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please can you help explainig that

thanks

How many people are needed to guarantee that at least two were born on the same day of the week and in the same month (perhaps in different years)?

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different day of the week... what is the maximum size of the group?

Obviouly the answer is seven. If we place one more person into the group, the last person

whose place into the group MUST born on the same day with one of the people whose

already inside the group. Therefore, if we have eight people, at least two of them are born

on the same day. If we have seven, they might be all born on different day...

The second problem is similar to this one...

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cristo

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AlephZero

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Answering that should give you a clue how to do the full question.

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HallsofIvy

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AlephZero

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That's true, but theAssuming that you really mean "guarantee", then the obvious answer is one more than the number of days in a year (including Feb 29).

But since my previous attempt at helping was ignored by the OP, I'm not going say any more.

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