If x and y are perfect squares, then which of the following is not necessarily a perfect square?

One student is asked to divide a half of a number by 6 and other half by 4 and then to add the two quantities....

If simple interest on a certain sum of money is Tk. 256 and the rate of interest per annum equals the number o...

Drum X is 1/2 full of oil and drum Y, which has twice the capacity of drum X, is 2/3 full of oil. If all of th...

A person's present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of...

A cricket team won 3 matches more than they lost. If a win gives them 2 points and loss(-1) point, how many ma...

If 35% of a number is 175, then what percent of 175 is the number?