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In CAT entrance examination paper there are 3 sections, each containing 5 questions. A candidate has to solve 5, choosing at least one from each section. The number of ways he can choose is Op 1: 2,500
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Sep 27, 2017
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In CAT entrance examination paper there are 3 sections, each containing 5 questions. A candidate has to solve 5,
choosing at least one from each section. The number of ways he can choose is
Op 1: 2,500
Op 2: 2,250
Op 3: 2,750
Op 4: 3,250
Mathematics
high-school
Kunal Kumar
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Kunal Kumar
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The best and most correct answer providedfrom your question about the entrance examination paper is the second option which is 2,250. The problem can be solved by:
3-1-1 : 5c3*5c1*5c1 *3!/2! = 750
2-2-1 : 5c2*5c2*5c1 *3!/2! = 1500
Adding the two answers:
750 + 1500 =
2250
I hope it has come to your help.
GreenEyedAndy
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Oct 2, 2017
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GreenEyedAndy
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