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A group has 7 people. Find the probability that 2 or more people in this group...

A group has 7 people. Find the probability that 2 or more people in this group share the same birthday. (Assume a non-leap year with 365 days).

Write each answer as a percent rounded to one decimal place, i.e. 16.8%. Do not include the percent symbol.

Math   Statistics-And-Probability   
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Answer #1

probability of being same birthday=1/365

0.00274

probability that two or more people share same birthday=1-p(0)-p(1)

=1-probability that less than two people share same birthday

then required probability is 1-0.999843

= 0.00015622554758812

please like ??

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