: A box contains 5 different red and 6 different white balls. In how m – InterviewSolution

1.	: A box contains 5 different red and 6 different white balls. In how many ways can 6balls be selected so that there are atleast two balls of each colour ?
Answer» For selecting6 balls so that atleasttwo balls of each colours = 5c26c4 + 5c36c3 + 5c46c2 = 1015 + 1020 + 515 =150 + 200 + 75 = 425

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