The Student Room Group

Set Theory Question

Of the 77 consumers interviewed on their bathing soap likes out of Choice,Dettol and Protex,5 would buy any soap,2liked only Dettol and Choice,those who liked Choice only were half of those who liked Dettol only and those who liked Choice only equalled those who liked Protex and Dettol only.Those who liked Choice and Protex only 1/5 of those who liked Protex only and were 1/4 of those who liked Dettol only.
i)Illustrate The above information in a venn diagram.
ii)How many would buy atleast two types of soap?
Reply 1
My only advice would have been "draw a Venn diagram" - can you do that part?
Reply 2
Yes I can do that but illustrating the info given becomes a fuss.
Reply 3
Original post by FosterJr
Yes I can do that but illustrating the info given becomes a fuss.

I'm afraid that's what this question is about - there's no nice way to do it. It's mostly testing whether you can copy accurately onto a diagram :frown:
Reply 4
It comes a problem interpreting the values.
Reply 5
Original post by FosterJr
It comes a problem interpreting the values.

Have you drawn the best diagram you can?

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