Question

A box contains different coloured counters, with P(purple) = 10%, P(yellow) = 0.6
andP(orange) = 1/7
Is it possible to obtain a colour other than purple, yellow or orange? If so, state the probability.

Answer 1

since .10 + .60 + 1/7 = 59/70 < 1 there are other colors
P(other) = 11/70