The fine imposed (in rupees) on 40 pupils for being absent is given below :
$
\begin{array}{l}
18,8,12,6,8,16,12,5,23,2,16,23,2,10,20,12,9,7,0,5 \\
3,6,27,21,19,15,20,24,2,16,14,8,23,24,10,14,3,8,11,2
\end{array}
$
Present the data in the form of frequency distribution table by taking class intervals $0-5,5-10,10-15,15-20,20-25$.
→Given $A = \{0, 1, 2, 4, 5\}, B = \{0, 2, 4, 6, 8\}$ and $C = \{0, 3, 6, 9\}$. Show that $A ∪ (B ∪ C) = (A ∪ B) ∪ C$ i.e. the union of sets is associative.
→