Quantitative Aptitude - Arithmetic Ability Questions

Find the value of 'y' if y84 = 225

The value of tan 315° cot (­ -405° ) is equal to

If x = 4aba+b, then what is the value of x+2ax-2a+x+2bx-2b ?

If 3a+4b3c+4d = 3a-4b3c-4d, then 

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

Rohit buys a ball for Rs 450 and sells it. Rohit gives two successive discount of 20% and 5% to the customer. What will be the selling price (in Rs) of the ball?

What is the area (in sq cm) of a circle whose circumference is 22 cm?

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