Let $U=\{x:x\in N$ and $n\le 8\},A=\left\{x:x\in N\right.$ and $\left.5<x^2<50\right\},$ $B=\{x:x$ is a prime $x<8\}$. Draw a Venn diagram to show the relation between the given sets and list the elements of the following.

(i) $A-B$

(ii) $B^{\text{'}}$

(iii) $A^{\text{'}}$

(i) How many drink coffee.

(ii) How many drink coffee, but not tea.

In a group of $450$ people, $200$ speak Hindi only and $180$ speak English only. If each person speak at least one language then,

(i) How many can speak English?

(ii) How many can speak Hindi?

(iii) How many can speak both English and Hindi?