Fill in the blanks: If papers are given back randomly in class of n students, th

Question

Fill in the blanks: If papers are given back randomly in class of n students, the chance that exactly 5 will get their own papers back is very close to _____. To prove this, we first get the number of ways in which papers can be returned as described: _____. This is the result of applying the multiplication principle: in the first stage we _____; in the second stage we _____. The last step is to divide by 5!, which is the total of all ways of giving the papers back, and use what we know about D_n/n!

Explanation / Answer

total no of students in the class =n

the students get their own paper =5

the nos of students does't got their own paper is =n-5

the total ways thatpaper will ewturn is =factorial n

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