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Author Topic: HELP igcse Math Jun. 06 ppr 2  (Read 2049 times)

Offline moon

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HELP igcse Math Jun. 06 ppr 2
« on: October 26, 2009, 08:02:11 am »
plz can you help Jun.06 paper 2 Question 17(b)? I know the answer from mark scheme but I don't know why. thanks. ???
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Offline Ghost Of Highbury

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Re: HELP igcse Math Jun. 06 ppr 2
« Reply #1 on: October 26, 2009, 08:16:18 am »
n(AUB) = n(A) + n(B) - n(AnB)

here n(AUB) = 29
n(A) = 18

n(B)=11

therefore n(AnB) has to b 0

so they are distinc sets

no intersection
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Offline moon

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Re: HELP igcse Math Jun. 06 ppr 2
« Reply #2 on: October 26, 2009, 08:37:42 am »
Thanks a lot
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Offline Ghost Of Highbury

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Re: HELP igcse Math Jun. 06 ppr 2
« Reply #3 on: October 26, 2009, 08:39:49 am »
thats k,..

u confused us with 09 and 06..lol..i had to solve both of them
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Offline ~~~~shreyapril~~~~

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Re: HELP igcse Math Jun. 06 ppr 2
« Reply #4 on: October 26, 2009, 08:45:16 am »
oye!!!
i guess this is the same thread that was there in queries rite???
why did ya do it twice??
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