In a monthly test, the teacher decides that there will be 3 questions, one from each exercise 7,8 and 9 of the text book. If there are 12 questions in exercise 7, 18 in exercise 8, and 9 in exercise 9, in how many ways can 3 questions be selected.

Dear Student,

Please find below the solution to the asked query:
1 questions from each exercise 7,8,9In Exercise 7 there are 12ways ,In Exercise 8 there are 18ways , In Exercise 9 there are 9 waysSo by the fundamental principle of counting , three questions can be selected as12×9×18=1944 ways

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