SAT Math Practice Problems!
In a group of 8 girls and 4 boys, how many ways are there to select 2 boys and 2 girls? A bag contains 12 marbles-3 green, 4 red, and 5 yellow. 3 marbles are randomly selected. Find the probability that 2 marbles are green and 1 is red? 3 marbles are again randomly selected.[…]