Tag: complement of sets
Questions Related to complement of sets
State True or False: $(A\cup B)'=A'\cap B'$
For any two sets A and B $A-(B\cup C)=(A-B)\cap (A-C)$
$AB=A$ and $BA=B$, then which of the following is not true?
For any two sets A and B $A\cup B=A\cap B$ if A$=$B.
If $A$ and $B$ are subsets of $U$ such that $n(U) = 700, n(A) = 200, n(B) = 300, n$$\displaystyle \left ( A\cap B \right )$ $= 100$, then find $n\displaystyle \left ( A'\cap B' \right )$
If A has 5 elements and B has 8 elements such that $\displaystyle A\subset B,$ then the number of elements in $\displaystyle A\cap B,$ and $\displaystyle A\cup B,$ are respectively :
While preparing the progress reports of the students, the class teacher found that $70$% of the students passed in Hindi, $80$% passed in English and only $65$% passed in both the subjects. Find out the percentage of students who failed in both the subjects
In a science talent examination, $50$% of the candidates fail in Mathematics and $50$% fail in Physics. If $20$% fail in both these subjects, then the percentage who pass in both Mathematics and Physics is
$(A\cup B)^{'} = A^{'} \cap B^{'}$ is called ____________ law.
In a survey, it was fond that $65$% of the people watched news on TV, $40$% read in newspaper, $25$% read newspaper and watched TV. What percentage of people neither watched TV nor read newspaper?