Question 327496
P(2 purple) = ( (# of purple on first draw)/(# of marbles total on first draw) ) * ( (# of purple on second draw)/(# of marbles total on second draw) )



P(2 purple) = (4/7)*(3/6) = (4*3)/(7*6) = 12/42 = 2/7


Note: there are 4 purple + 3 pink = 7 total marbles



So the odds are 2/7 (which in decimal form is about 0.2857) or about a 28.57% chance.