# Set notations

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#1
hi
Last edited by username5396224; 1 month ago
0
1 month ago
#2
(Original post by dog25)
hey so i am wondering how would you solve these like the method i have the answers PLS help i am rlly confused.
A={factors of 12}
B={factors of 18}
D={prime numbers} the universal set is 1 to 25 inclusive
1)A ∪ B∩ C
2)A∪B∩D'
just how would you solve it if there are more than two sets where there is different notation symbols because i am unsure how to do this.
Hi! I just had a quick go and got this... I am not really sure but it might give you an idea!
0
1 month ago
#3
(Original post by dog25)
hey so i am wondering how would you solve these like the method i have the answers PLS help i am rlly confused.
A={factors of 12}
B={factors of 18}
D={prime numbers} the universal set is 1 to 25 inclusive
1)A ∪ B∩ C
2)A∪B∩D'
just how would you solve it if there are more than two sets where there is different notation symbols because i am unsure how to do this.
If you draw it as a Venn diagram, does the order matter? So for 1) do

(A ∪ B) ∩ C

Both operations then just involve 2 sets.
0
1 month ago
#4
(Original post by dog25)
1)A ∪ B∩ C
2)A∪B∩D'

just how would you solve it if there are more than two sets where there is different notation symbols because i am unsure how to do this.
Do brackets not exist?
0
1 month ago
#5
(Original post by zetamcfc)
Do brackets not exist?
That's why I was a little confused 😂
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#6
ohhhhhhhhhhhh so you would bracket the first two?
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#7
So basically draw it as a venn diagram?Hold on sorry can one of you explain step by step the method
0
1 month ago
#8
If you drew the Venn diagram, would it matter which two you did first?
And yes I can do it, but would prefer to see your effort.
0
1 month ago
#9
(Original post by dog25)
So basically draw it as a venn diagram?Hold on sorry can one of you explain step by step the method
0
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