i dont get part (iii) for question 1
ques2 : the answer is 35/72
Hey! I'll just quickly answer your second question: honestly, I'll leave the first to someone who can use LaTex better than me.
To draw a Blue ball from the first bag, there is a
chance. To draw a Blue ball from the second bag, there is a
. So, to get the probability of picking two blue balls, we just multiple these together! The answer will be
as you told us! You can answer the other questions in a similar fashion: The probability of getting one yellow and one blue ball will be the probability of getting a yellow THEN a blue plus the probability of getting a blue THEN a red. The probability of getting at least one yellow ball will be the probability of getting a red and a yellow plus the probability of getting two yellows (or, more easily, 1 minus the probability of getting two blues!).
Jake