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The probability that birthday of six …

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The probability that birthday of six different persons will fall in exactly two calendar months is

Posted by Ayansh Kharya 3 years, 10 months ago

CBSE > Class 11 > Mathematics

1 answers

Megha Desai 3 years, 10 months ago

No. Of possible months of a single person =12 Possible ways for 6 people = 12^6 Birthday falls in two calendar months=(choose 2 months from 12 months & put all 6 persons into any of the month - the case when all 6 people get into single month) 12C2 (2^6 -1) Therefore required probability is 12C2 (2^6 -1)/12^6

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