Problem
First name
Alistair Burton
School
Crosscrake C.E primary school
Country
Age
10
HI!
I am just going to answer numbers two and three.
Number 2: very likely. I happen to know that it gets likely at about 35 people.
Number 3:Extremely unlikely! even if there are 365 people in the school, it is almost impossible that none of them share a birthday!