Maharashtra Board Solutions for Chapter: Sets, Exercise 4: Practice set

If $n\left(A\right)=15, n\left(A\cup B\right)=29, n\left(A\cap B\right)=7$ then $n\left(B\right)=?$

In competitive exam $50$ students passed in English. $60$ students passed in Mathematics. $40$ students passed in both the subjects. None of them fail in both the subjects. Find the number of students who passed at least in one of the subjects?

Observe the given Venn diagram and write the set $B$.

Observe the given Venn diagram and write the set $A\cup B$.

Observe the given Venn diagram and write the set $U$.

Observe the given Venn diagram and write the set $A^{\text{'}}$.

Observe the given Venn diagram and write the set $B^{\text{'}}$.

Observe the given Venn diagram and write the set ${\left(A\cup B\right)}^{\text{'}}$.