Quantitative Aptitude - Arithmetic Ability Questions

The sum of squares of three positive integers is 323. If the sum of squares of two numbers is twice the third, their product is

A Lawn roller makes 20 revolutions in one hour. The radius it runs through 25 minutes is

A man buys 7 shirts at Rs 300 each, 2 trousers at Rs 450 each and 1 pair of shoes at Rs 500 each. What is the average expenditure (in Rs) per article?

What is the equation of the line passing through the point (2,-3) and making an angle of -45°with the positive X-axis?

Simplify 576b3x2a4z3/36a3b2z

If a-1a=1, then a2 + 1a2 ?

If the 3rd and the 5th term of an arithmetic progression are 13 and 21, what is the 13th term?

D and E are points on side AB and AC of ΔABC. DE is parallel to BC. If AD:DB = 2:5 and area of ΔABC is 98 cm sq, what is the area (in sq cm) of quadrilateral BDEC?