Quantitative Aptitude - Arithmetic Ability Questions

What least number must be added to 213, so that the sum is completely divisible by 9?

Two successive discounts of 10% and 25% are given by Raman on a shirt. If the marked price of the shirt is Rs 600, then what is the value (in Rs) of discount?

When [x + (1/x)] = 5, then what is the value of [x – (1/x)]?

If cot 240° = x, then the value of x is

If y = √3 - √2, then find the value of 1y3 - y3.

A man buys 10 oranges for Rs. 3 and sells 8 for Rs. 3. Calculate his gain percent.

Ms. Alina borrowed Rs.650 at 6% per annum simple interest. What amount will she pay to clear her debt after 4 years?

Saathi deposited Rs. 825 in a bank that promised 8% simple interest per annum. If Saathi kept the money with the bank for 5 years, she will earn an interest of