Question 7
If $A=\{a_1,a_2,a_3,\ldots,a_m\}$, $B=\{b_1,b_2,b_3,\ldots,b_n\}$ and $C=\{c_1,c_2,c_3,\ldots,c_l\}$, then $A\times B\times C=\{a_1,a_2,a_3,\ldots,a_m\}\times\{b_1,b_2,b_3,\ldots,b_n\}\times\{c_1,c_2,c_3,\ldots,c_l\}$. Find the cardinality of the power set of $A\times B\times C$.