An urn containing n balls can be represented by the set U = {b1, b2, ... , bn}.

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we are drawing 3 balls which is represented by i, j, k respectively ,

for the i=1, getting j=1 and k=1 is allowed so

the all three balls can be the first ball b1

so this is with replacement

and the first for loop contains the n size and then the second for loop inside that contains n size and the the third for loop contains n size inside the second for loop and this is the loop that contains the print command. so

the print command will execute n*n*n = n^3 times

so the programme will print n^3 lines

Please let me know if you need any clarification. I'm always happy to answer your questions.

xunxnna (1456)
Rice University

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