1. From a box containing 10 red, 30 white, 20 blue and 15 orange
balls, 5 are drawn at random. Find the probability that:
a) All are white - 0.008256723
b) Be red, white or blue - 0.009169617
c) They are neither red nor blue - 0.070788
2. A company will launch three new shampoos. It is believed that
the probability that the first one is successful is 0.45, that the
second one has it is 0.55 and that the...