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Chapter 1 review.notebook
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A ∩ B = { } Empty Set
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So, 13 students like Math and English
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16
X17 x 26 x
17 x + x + 26 x + 16 = 45
59 x = 45
x = 14
So, 14 are eating both fish and chips.
There are 26 14 = 12 eating only chips.
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8 are not enrolled in either
State Park only is 11
n(B ∪ S) = 225
n(B ∪ S)' = 95
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13
7
18
1079
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NT B
D
3
5
6 4
2 1
x = 2
17 Eat school dinners
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5
C D
F
4
0
1 3
5 7
1
x = 5
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7
x =
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10
P S
NY
6
820
x
14 x
11 x
4
20 + 8 + 10 + 6 + (14 x) + x + (11 x) + 4 = 70
73 x = 70
x = 3
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6
E T
M
x
13 14
728 x 23 x
29 x18
(28 x) + 7 + (23 x) + x + 13 + 14 +(29 x) + 18 = 120
132 2x = 120
2x = 12
x = 6
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S = { 2, 0, 2, 4, 6, 8}
C = {10, 5, 0, 5, 10, 15, 20}
S∪C = {10, 5, 2, 0, 2, 4, 5, 6, 8, 10, 15, 20}
S∩C = {0}