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//Example 1.21 A batch contains 10 articles of which 4 are defective .
clc;
clear;
N=120;
disp(N,"total no. of ways in which 3 articles are selected out of 10  =");
M= 20;
disp(M,"No. of favourable cases are  ");
P=M/N;
disp(,P,"Probability that 3 articles are chosen at random and none is defective = ");