Question

\(\large \color{black}{\begin{align} \normalsize \text{True or False ,If}\quad A=\{1,2\},B=\{3,4\},\text{then} \quad A\times( B\cap \phi )=\phi\hspace{.33em}\\~\\
\end{align}}\)

Answer 1

\[\large A\times \emptyset = \emptyset\]

Answer 2

is \(\phi\) equal to zero so , \(\text{anything} \times \phi=\phi\)