If A and B are disjoint then $$\displaystyle \left ( A\cap B \right ){}'=$$_______
When A and B are disjoint sets, they do not have any overlapping region as shown in the figure.
So, $$ (A \cap B) = \phi $$
And $$ {(A \cap B)}^{`} = \mu - \phi = \mu $$ will be the complete region of the universal set as there is no overlapping region of sets A and B
Out of 800 boys in a school 224 played cricket, 240 played hockey and 236 played basketball. Of the total 64 played both basketball and hockey, 80 played cricket and basketball and 40 played cricket and hockey, 24 players all the three games. The number of boys who did not play any game is
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?
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?