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+//Chapter 07: Discrete Probability
+
+clc;
+clear;
+
+//Part a
+no_four_digits=10**4              //no of ways to choose 4 digits by the product rule
+
+//since only 1 entry is correct and wins the prize ,it is inferred that there is only 1 possible way to choose all the digits correctly
+no_correctentry=1               //no of ways to choose all 4 digits correctly
+prob_winning=no_correctentry/no_four_digits       //probability of player winning the large prize
+
+disp(,prob_winning,'Probability that a player wins the large prize is')
+
+//Part b
+//to win small prize player must correctly choose exactly 3 of 4 digits
+
+no_correctentry=36       //no of ways to choose 4 digits with exactly three of the four being correct
+prob_winning=no_correctentry/no_four_digits       //probability of player winning small prize
+
+disp(,prob_winning,'Probability that a player wins the small prize is')