Venn Diagrams!

Today I'll be teaching you how to make and work venn diagrams. Some things you should know:

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  The letter n stands for the intersection of the two cSircles.


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  The letter u stands for the union. The union is both of the circles.


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  If you have a line over a letter it means that it is a complement, meaning you want everything but the underlined area.
  

Example: There are a total of 40 juniors at East Island High. Ten juniors said they like math. Fifteen junior like science better. Six juniors like both. Find (M u S), (M n S), and the compliment of S.

1. (M u S) means that you want the union of the cicrles. All you have to do simply add.

(M u S) = 31

2. (M n S) means that you're only looking for the intersection of the two circles, which is the middle.

(M n S) = 6

3. Compliment of S means that you're counting everything but S.

compliment of S = 40 - 15 = 35

Woohoo! We're doneee! kbyeee.(: