Tag: introduction to set
Questions Related to introduction to set
Americans like at least one of cheese or apples. A survey shows that $63$% of the Americans like cheese while $76$% like apples. If $x$ % of the Americans like both cheese and apples, then
Let the sets $A={2,4,6, 8, ...}$ and $B={3, 6, 9, 12, ...}$, and $n(A)=200, n(B)=250$. Then
In a group of children $35$ play football out of which $20$ play football only, $22$ play hockey; $25$ play cricket out of which $11$ play cricket only. Out of these $7$ play cricket and football but not hockey, $3$ play football and hockey but not cricket and $12$ play football and cricket both. How many play all three games?
If the universal set ${x\in W ,3<x≤12} ,A={5,7,9}$, then $A'=$
Let $U={x: \in, W: 3<x< 12} $, $B={4,6,8,10}$ . $B'$
Let $S={1,2,3,4,5,6,7}$ and let $A={2,5,7}$ then $A'$ is
If AandB are subsects of the universal set X and n(X)=$50,$n(A)=$35$,n(B)=20 Find
For any two sets A and B, A' - B' is equal to