Quantitative Aptitude - Arithmetic Ability Questions

A solid cone of height 36 cm and radius of base 9 cm is melted to form a solid cylinder of radius 9 cm and height 9 cm. What percent of material is wasted this process?

The profit (in Rs.) after selling an article for Rs.524 is the same as the loss (in Rs.) after selling it for Rs.452. The cost price of the article is:

Find the greatest number among 213, 312, 1, 516

If cos 240° = x, then value of x is

What is the value of Sin 30- √2 Cos 30

30% of a number exceeds 25% of the same number by 27. What is the value of the number?

Length and breadth of a rectangle are increased by 40% and 70% respectively. What will be the percentage increase in the area of rectangle?

If 1/√(1 -­ sin2A) = x, then the value of x is