Quantitative Aptitude - Arithmetic Ability Questions

The value of  (0.3)2/100=?

What is the value of [(cos 7A + cos 5A)÷(sin 7A – sin 5A)]?

If x + y = 12 and x2 + y2 = 94, then xy is 

A can do a piece of work in 10 days, B can do it in 12 days and C can do it in 15 days. In how many days will A, B and C finish it, working all together?

The sum of two angles of a triangle is 116o and their difference is 24o . The measure of smallest angle of the triangle is

If 2x-2x=1 (x≠0),then the value of x3-1x3 is

The sum of two fractions is 5/6. One of them is 3/4, what is the other fraction?

The value of (2+32-3-342) is