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# S2 sampling: how to know if I listed all samples? Any rules?

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1. For example how do i know if the number of possible samples in this question is 8?
2. Anyone know this?
3. Work through it systematically, e.g.
(1,1,1)
(2,1,1), (1,2,1), (1,1,2)
(1,2,2), (2,1,2), (2,2,1)
(2,2,2)

The only way really
4. The sample of size 3 is there are 2 possible options for two possible options for and two possible options for , so the number of possible samples is
5. (Original post by NotNotBatman)
The sample of size 3 is there are 2 possible options for two possible options for and two possible options for , so the number of possible samples is
Thanks a lot!
6. You can also check that the probabilities add to 1 at the end.

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