Quantitative Aptitude - Arithmetic Ability Questions

If 1/√(1+tan2A) = x, then value of x is

The ratio of the weights of two spheres is 8 : 27 and the ratio of weights per 1 cc of materials of two is 8 : 1 . The ratio of the radii of the spheres is

Ajay can do a painting in 12 days. Amit is 70% more efficient than Ajay. What is the number of days Amit would need to finish the same painting?

If x+1x=-2,then the value of x7+1x7

If A% of A is 196, then what is the value of A?

If the product of two numbers is 2646 and their LCM is 42 then their HCF is

What is the sum of first 40 terms of 1 + 3 + 4 + 5 + 7 + 7 + 10 + 9 + ....?

If the edge of a cube is increased by 10%, then what will be the percentage increase in its volume ?