Discrete_Structure_Quiz1_Unit_2

The intersection of two sets A & B is the set containing of all elements which are in A, or in B, or in both sets A & B.

• true
• false

If A={1,2,3,4,5,6,7,8,9,10} , B= {1,3,5,7,9} Then A – B=

• {1,2,3,4,5,6,7,8,9,10}
• {2,,4,6,8,10}
• {2,3,4,5,6,7,8,9}
• {2,4,6,8}

A’=U-A

• true
• false

A – B = A ∩ B’

• true
• false

A symmetric difference with B = (A – B ) U (B – A )

• true
• false

A – B = A’ ∩ B’

• true
• false

if A={Φ}, B= {a,Φ,{Φ}} then A symmetric difference with B=

• {a,Φ}
• {Φ}
• {a,{Φ}}
• {a,Φ,{Φ}}

De Morgan’s law state that

• (AUB)’=A’∩ B’
• (AUB)=(BUA)
• (A∩B)’=A’U B’
• Both a & c

AU(B’∩C) = (AUB’)∩(AUC)

• true
• false

Let A and B be two sets. If each element of set A is an element of set B then A is called subset of B.

• true
• false