Qualification > Math

statistics n09

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Freaked12:

--- Quote from: khi2ruh on May 26, 2010, 01:15:20 am ---hey im stuck!!

n09 Q5 (a) (i) (ii) and b (ii)

--- End quote ---

5000 till 6000
so five is fixed
5xxx
5P3=60

part 2)
5xxx
any number could come
so 5C5(6C1)(6C1)(6c1)

khi2ruh:
Thanks

could u please answer part b(ii) of the same question

ifraha18:
thnku so muich..:)

Freaked12:

--- Quote from: khi2ruh on May 26, 2010, 02:02:48 am ---Thanks

could u please answer part b(ii) of the same question

--- End quote ---

6 boys  8 girls

  5 pupils
either they are in the team or all are not in the team

11C2(because only two places will be left if they all are in the team and there will be 11 people altogether remaining if 3 boys are already in the team) +11C5( 3 boys cannot enter so 11 people remaining for 5 places)

khi2ruh:
wow u r so smart

u r a life saviour!! r u gonna do the exam in the mornin or r u a teacher?

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