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Please explain the 17th question and it's solution.
Answers (12)
Miradevi S
Or other way is for first student selecting 5 out of 15 so 15c5 Sec student selecting 5 out of 10 so 10c5 Third student selecting 5 out of 5 so 5c5 15c5*10c5*5c5
Now I understood sis. Thank you for the help.