Quantitative Aptitude - Arithmetic Ability Questions

A complete factorisation of x4 + 64 is

P and Q are two alloys which are prepared by mixing tin and lead in the ratio of 12 : 5 and 4 : 3 respectively. If equal quantities of alloys are melted to form athird alloy R, then what is the ratio of tin and lead in alloy R?

The area of the largest sphere ( in cm2) that can be drawn inside a square of side 18 cm is

Ram is 20 years younger than Shyam. 5 years ago, the ratio of their age was 3:5. The sum of their present age is

Find the LCM of 3.2, 2.72, 1.28 and 1.44

If √(1 - sin2A) = x, then the value of x is

If the amount on a certain principal in 3 years at 12% rate of interest compounded annually is Rs 12,000, what will be the amount (in Rs) after the 4th year?

A trader sells wire and gains 60% on the cost price. What will be the profit % on selling price?