Hi, this is my question:
Harry has a bag of different coloured balls, 3 red balls, 2 yellow balls and 1 blue ball, identical except for their colour.
Harry picks two balls from the bag at random and without replacement.
A) What is the probability that Harry picks at least one yellow ball?
for this question would i do, 2/6 x 1/5= 2/30= 1/15 or would it be 2/6 + 1/5= 3/11?? Or is that wrong?
Could you tell me which one it is or if its not one of them tell me where im going wrong and how i can improve it!