Homework SourseA bag has 5 red 2 white and 4 blue marbles how many samples
A bag has 5 red 2 white and 4 blue marbles how many samples of 4 marbles can be drawn in which 2 marbles are red and 2 are blue
Solution
A box contains 4 blue marbles, 5 red marbles, 2 white marbles.
Total number of balls = 5+4+2 = 11
four marbles are selected at random,such that 2 are red and 2 are blue
Out of 5 red 2 can be selected in 5C2 ways, And Out of 4 blue 2 can be selected in 4C2 ways,
The number of favourable ways = (5C2)*(4C2) =10*6 = 60
