Question

how to calculate 42*54 in vedic math

Answer 1

Dear Student

42*54

$$\begin{gathered} 42\times 54=\_\hspace{0.17em}\_\hspace{0.17em}\_ \\ \Rightarrow 4\times 5=20 \\ \Rightarrow write20inthefirstblank \\ \Rightarrow 42\times 54=20\hspace{0.17em}\_\hspace{0.17em}\_ \\ \Rightarrow 2\times 4=8 \\ \Rightarrow write8inthelastblank \\ \Rightarrow 42\times 54=20\hspace{0.17em}\_\hspace{0.17em}8 \\ \Rightarrow now \\ \Rightarrow \left(2\times 5\right)+\left(4\times 4\right)=10+16=26 \\ \Rightarrow write6inthemiddleblankandadd2tothefirstblank \\ \Rightarrow 42\times 54=22\hspace{0.17em}6\hspace{0.17em}8 \\ \Rightarrow Sotheansweris2268 \\ Regards \end{gathered}$$