Question 1191515: Question 1
please help me with this question.
If the universal set U= {l,m,n,o,p,q,r,s,t,u,v,w,x,y,z} has subsets
A= {z,y,x,w,v,u}
B= {x,w,v,t,s,r}
C= {u,v,p,q,r}
Find the elements in A n B n C (A intersection B intersection C)
Answer by MathLover1(20850)   (Show Source):
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in A n B n C will be element that are in all three sets, A, B, and C
A= {z,y,x,w,v,u}
B= {x,w,v,t,s,r}
C= {u,v,p,q,r}
first find (A n B)= {z,y,x,w,v,u} n {x,w,v,t,s,r} = {x,w,v}
then (A n B )n C={x,w,v} n {u,v,p,q,r}= {v}
so,A n B n C= {v} (only v is element of all sets)
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