Question

An urn contains 5 red and 3 blue balls and four balls are drawn at random without replacement what is the probability that they are alternatily of different colour?​

Answer 1

There are 8 balls in total. So to find out probability, divide 8 by 100 I.e. 12.5. Then the probability or picking up a red ball is 12.5*5%= 62.5% and probability or picking up blue is 12.5*3%= 37.5%