There is only 11 options so only 4 people can guess three numbers and one of those four people have a 1/4% which is quite high. So technically everyone should just post the next numbers in line from the other person.

I will start

20

21

22

There is only 11 options so only 4 people can guess three numbers and one of those four people have a 1/4% which is quite high. So technically everyone should just post the next numbers in line from the other person. I will start 20 21 22