Question 342887
Let the three people be {{{A}}}, {{{B}}}, and {{{C}}}.
The probability that you and A share a birthday is {{{1/365}}}.
The probability that you and B share a birthday is {{{1/365}}}.
The probability that you and C share a birthday is {{{1/365}}}.
So the probability that you and one of them share a birthday is 
{{{P=1/365+1/365+1/365=3/365=0.82}}}% <--- You forgot the decimal point.