// Example 1.42 One urn contains 2 white and 2 black balls;
clc;
clear;
E1=(2/4)*(2/6);
E2=(2/4)*(4/6);
disp(E2, "Probab. that balls are of black colour=",E1,"Probab. that balls are of white colour=");
disp(E1+E2,"The required Probability that they will be of same colour=");
S=1/2;
disp(S,"Selection of one urn out of two urn=");
P1=S*(2/4);
P2=S*(2/6);
disp(P1, "Probab. that white ball is selected from urn I=", P2,"Probab. that white ball is selected from urn II");
disp(P1+P2,"The required Probability that it will be a white colour=");