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6. (5 Marks) A group of four undergraduate and five graduate students are available to fill certain student government posts.
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Girona Inder graduate Students H Graduate Studenti 5 Total = 9 (a). → Selecting 4 students out of q in 9! q! .cy 4!6-4)!2 We have , undergraduate and 5 graduate students, No. of ways ways in which enactly 2* under graduates will get post among 4Selecting 3 from undergraduate (b). students from total of a > Group of 4 cting One graduate and 9 126 cy For We are sele در4c 4 10 x 4 : 40 GOO * Choose u raduates out of 5 & none from undergraduate scy 4. x 5x1= 5 c. Now, add add all 20+ 60+ 40+5

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