In a group of 10 outstanding student in a school there are six boys and four girls three students are to be selected out of these at random for debate competition find probability that all of them are boys

 

Asked by sangitakavediya007 | 29th Sep, 2019, 04:10: PM

Expert Answer:

Total no. of students=10
No. of boys=6 and no. of girls=4
No. of ways of selcting 3 student = 10C3
No. of ways of selecting 3 boys=6C3
 
Just do 10C3 upon 6C3


Answered by  | 30th Sep, 2019, 01:06: PM