in a sample of 800 adults, 172 think that most celebrities are good role models. Two US adults are selected from this sample without replacement. complete parts (a) through (c)

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.