The Operations of On-Sets®

Sample Universe
































B
1
2
3
4
5
6
7
8
9
10
OPERATION
MEANING
EXAMPLE
(for Universe above)

Union (U)

The cards that are in either set

B U R = 6 (cards 1-6)

Intersection (ñ)

The cards that are in both sets

B ñ R = 3 (cards 1-3)

Subtraction (-)

The cards that are in the first set
but not the second

B - R = 1 (card 4)

Complement (')

The cards that not in the set

B' = 6 (cards 5-10)

How many cards in the Sample Universe above are in each of these sets?

1. R U G

2. G - Y

3. G ñ B

4. G'

5. (R U Y)'

6. R' - Y

Answers

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