Quantitative Aptitude - Arithmetic Ability Questions

Which one of the following is an irrational number?

2*[­0.3(1.3 + 3.7)] of 0.8 = ?

The ratio of present ages of Sheetal and Divya is 6 : 5. After 8 years, their ages will be in the ratio of 22 : 19. What is the present age (in years) of Divya?

Three solid spheres have their radii r1, r2 and r3. The spheres are melted to form a solid sphere of bigger radius. Then the radius of the new sphere is

Divide 32 into two parts such that the sum of the square of the parts is 674. What is the value of the parts?

Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. The ratio between the capacity of a man and a woman is

The LCM of 56, 84 and 112 is

The area of a circle is 616 sq.m. Find its diameter.