How do a class win a lottery?

If I understood the question, I might be able to answer it ://

What is the probability that a class of 24 people win a 10-number lottery with 2-number combination?

The probability of winning the lottery by selecting 2 numbers out of 10 for 1 ticket is:

10C2=45, or 1 in 45 chances. The fact that 1 ticket is shared between 24 people is not going to change the odds of winning the first prize. It is just they will have to divide the proceeds of the winning ticket among 24 people.