Exam Questions

Sec 2s Promoting to Sec 3s

Hello World,

I believe most of the students have received your streaming outcome. I certainly hope that you have gotten the subject combination that you have chosen.

The other day I was at Brass Basah Complex, Popular Bookstore. I was shocked to find that Popular has already stocked up with all the textbooks and parents are already armed with the booklist, doing the purchases for their children. I guess for you folks, you are doing your own purchase since you all afterall are youths :)

A-Math Circular Measure

5 marks, showing qn. Another question from GCE O Level Additional Mathematics (A-Math).

A-Math P & C Qn!

The no. of applicants for a job is 15. (i)Calculate the no. of ways in which 6 applicants can be selceted for the interview.

The six selected applicants on a particular day. (ii)Caluculate the no. of ways in which the order of the six interviews can be arranged.

Of the 6 applicants, 3 have backgrounds in business, 2 have backgrounds in education and 1 has a background in recreation. Calculate the number of ways in which the order of the 6 interviews can be arranged, when applicants having the same background are interviewed in succesion.

Who's up for this challenge?

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BBB EE RSo there are 3 groups of people and there are 3! ways of arranging these 3 groups
Within BBB group, there are 3! ways of arrange these 3 B people, similar within EE group, there are 2! ways of arrange these 2E people
so Total = Arrange Big Groups * Arrange within each group = 3! * 3! * 2!