24
18
12
6
Correct answer is A
nP4=n!(n−4)!
nC4=n!(n−4)!4!
nP4nC4=n!(n−4)!÷n!(n−4)!4!
= 4!=24
Marks 5-7 8-10 11-13 14-16 17-19 20-22 No of students 4 7 26 41 14 8 T...
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