$$(49)^{15}-1$$ is exactly divisible by :

if 5432*7 is divisible by 9, then the digit in place of * is :

A man spends 1/4^th of his income on food, 2/3^rd of it on house rent and the remaining income which is Rs. 630 on other commodities. Find his house rent.

The smallest number of five digits exactly divisible by 476

if 3 times a number exceeds its 3/5 by 60, then the number is.

A person gives 1/4  of his property to his daughter, 1/2  to his sons and 1/5 for charity. How much has he given away?

If $${17}^{200}$$ is divided by 18, the remainder is: