Asked by Lizzie

A sample of 4 balls is to be selected at random from an urn containing 20 balls numbered 1 to 20. Six balls are green, 6 balls are white, and 8 balls are black.
(a) How many different samples can be selected?

(b) How many samples can be selected that contain at least 1 white ball?
Answered by doge master
i think A is 288, And im sorry but i dont know B.
Also i want to have A confirmed by a (Real) Teacher, or someone who DOES know this, so i dont end up giving you wrong info. Sorry for the lack of answer(s) I tried
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