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Subjects
Mathematics State Board
Class 9
Set Language
Application on cardinality of sets
6.
Find the value of "x"
Exercise condition:
2
m.
If
n(A \cup B \cup C) = 120
,
n(A) = 2x
,
n(B) = x
,
n(C) = 2x
,
n(A \cap B) = 30
,
n(B \cap C) = 30
,
n(A \cap C) = 20
and
n(A \cap B \cap C) = 5
. Then find the value of
x
.
The value of
x =
195
39
40
38
.
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