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give explanation with answer

give explanation with answer

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Grade:12

1 Answers

Vijay Mukati
askIITians Faculty 2590 Points
8 years ago
Hint.:-Total no. of Possibilities of choosing questions from part A,B and C is 6. Either candidate can attempt (4, 1, 1) questions from part A, B and C respectively or (3,2,1) or (3,1,2) or (2,3,1) or (2,1,3) or (2,2,2). Now we can easily find the no. of ways from each possibilites. Example for first posibility i.e. (4,1,1), no. of possibile ways =6C4*3C1*3C1. Similarly we can find for others. Then finally add all the possiibily. You will get the ans as 720. Thanks.

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