Find the probability that the birthdays of six different persons will fall in exactly two calender months.
yakumoreyucurry:
What is meant by 'exactly two calendar months'?
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lets suppose:
any person having a birthday on any month have a probabilty= 1/12
Probability of a person having a birthday on Feb with 28 days is less than having a birthday on January with 31 days.
No of ways of choosing 2 months from 12= C¹²₂
no of possible months= 12⁶
applying combination
=C₂¹² . 2⁶−2/12⁶
= 341/12⁵
any person having a birthday on any month have a probabilty= 1/12
Probability of a person having a birthday on Feb with 28 days is less than having a birthday on January with 31 days.
No of ways of choosing 2 months from 12= C¹²₂
no of possible months= 12⁶
applying combination
=C₂¹² . 2⁶−2/12⁶
= 341/12⁵
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