Quantitative Aptitude - Arithmetic Ability Questions

ΔABC is an isosceles right angled triangle having ∠C = 90°. If D is any point on AB, then AD2+ BD2 is equal to

The length of a side of an equilateral triangle is 8 cm. The area of the region lying between the circum circle and the incircle of the triangle is (use: π = 22/7)

If a + b + c = 0 , then the value of a3 + b3+ c3 is

The price of an article is cut by 7%, to restore it to its original value, the new price must be increased by

A sum of Rs. 4000 is lent out in two parts, one at 8% simple interest and the other at 10% simple interest. If the annual interest is Rs. 352. The sum lent at 8% is

What is the average of first 30 multiples of 9?

The average of first 20 multiples of 12 is

a and b are irrational numbers such that a+b = q is a rational number; then a­b is