$63 + 371 \div 7 = ?$

The sum of two numbers is $25$ and their difference is $13$. Find their product.

Which one of the following is the greatest number of five digits divisible by $231$?

$A$ piece of cloth measured with a metre stick,which is $1 \ cm$ short,is found to be $100 \ m$ long. Reckoning the metre stick as being correct,what is the actual length of the cloth in $cm$?

$149.9 \%$ of $149.9 + 149.9 = ?$

If the sum of two numbers,one of which is $\frac{2}{5}$ times the other,is $50,$ then the numbers are