Quantitative Aptitude - Arithmetic Ability Questions

If (1 -­ cosA)/(1 + cosA) = x, then the value of x is

A bag contains coins of denominations Rs.1, Rs.5 and Rs.10. Assuming there are equal number of Rs.1, Rs.5 and Rs.10, what will be the total number of coins in the bag be if the total money is Rs. 368?

Among four students sitting in a row, average age of last three students is 20 years and the average age of first three students is 21 years. If the age of first student is 26 years, then what is the age (in years) of the last student?

Dipali bought a set of cups for Rs. 375, but then had to sell it later to clear old stocks for Rs. 345. What is the percentage of loss that she incurred?

Vishal is 20 years younger to Arya. Twelve years hence Arya's age will be 1.25 times that of Vishal. Aryais now ......... years old.

In a camp 180 students had ration for 20 days. How many students should leave the camp if the ration should last for 25 days?

Which of the following equations has real and distinct roots?

The circumference of a circle is 88 cm. Find its radius (in cm).