Consider the following table that shows the number (in lakhs) of different sizes of LED television sets sold by a company over the last seven years from $2012$ to $2018$. Answer the question based on the data contained in the table:
Sale of LED Television sets (in lakhs) of different sizes (in inches)
What is the difference in the number of $40$-inch Television sets sold in $2013$ and $2018$
Refund time depends on the payment mode --...