If A,B,C are non-overlapping sets, then n \(\left( A\cap B\cap C \right) \) is ___________
(a)
n(A) + n(B) + n(C)
(b)
\(n\left( A\cup B\cup C \right) \)
(c)
0
(d)
\(n\left( A\cap B \right) \)
In a town 30% like only coffee, 20% like only tea,10% like only like,15% like only any two of them, 5% only like all the three. What is the percentage of people who like none them.
(a)
15%
(b)
20%
(c)
10%
(d)
5%
\(\left( A\cup B\cup C \right) \cup \left( A\cup BC \right) ^{ ' }\)=_______
(a)
\(\Phi \)
(b)
A
(c)
U
(d)
\(A\cap B\cap C\)
For any three sets, P,Q,R\(\left( P\cap Q \right) ^{ ' }\)
(a)
\({ P }^{ ' }\cup { Q }^{ ' }\)
(b)
\(P\cup Q\)
(c)
\({ P }^{ ' }\)
(d)
\({ Q }^{ ' }\)
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Answers
(c)
8
(c)
equivalent sets
(b)
AΔB
(c)
2
(c)
A'
(a)
\(\left( A\cup B \right) =B\cup A\)
(c)
0
(b)
20%
(c)
U
(a)
\({ P }^{ ' }\cup { Q }^{ ' }\)
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9th Standard Maths Set Language English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021