There are 6 girls and 7 boys in a class. a team of 10 players is to be selected from the class. if the selection is random, what is the probability of selecting a team of 4 girls and 6 boys?

Girls is 4/10 and to get the boys is 1/7

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.