Quantitative Aptitude - Arithmetic Ability Questions

Two pipes X and Y can individually fill a tank in 48 and 72 min respectively. If they are opened simultaneously, how long will it take for the tank to fill? 

If the radius (r) of a circle is increased by 'x' units, what is the number of units by which the circumstance of the circle is increased?

What is the least number that can be multiplied to 69120 to make it a perfect cube?

Triangle ΔXYZ is similar to ΔPQR. If XY:PQ=5:1. If Area of ΔPQR is 5 sq cm, what is the area (in sq cm) of ΔXYZ?

The whole surface area of a pyramid whose base is a regular polygon is 340 cm2 and area of its base is 100 cm2 . Area of each lateral face is 30 cm2. Then the number of lateral faces is

Solve : (x + 2y) (2x - y)

19 x 23 = 437. Then 190 x 0.023 = ?

Find out the odd word/letters/number/number pair from the given alternatives.