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# factorials?

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10 questions each question is multiple choice (a,b,c,d) how many total possible responses

Feb 15, 2021

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Now all the questions will be answered independently

Note if works is done independently then permatutions are added. For example if. You need to find make a team of 12 from a class which search two section each Class Section has 12 student the teams who comprise of 6 different from each section then the permutation of 1 section will be added to second sectionto get the total permutations of number of ways in which a team of 12 can be selected

But if. Doing one work depend or influence other then permatutions are multiplied

Ex the combination of four letter word is 4× 3×2×1

So ways in which one question can be answered is. 4! = 24

There are ten question which has to be answered independently so

Total no. Of ways = 10 × 24 = 240

The question was easy but u need to understand when to apply 10! × 4!

And when to apply 10 × 4!

I had explained it above in detail

Hope u get it comment if u want to understand it more briefly but I guess u can understand from this content if u don't comment down and I will repeat the explanatio

Feb 15, 2021