Quantitative Aptitude - Arithmetic Ability Questions

What is the value of sin (B – C) cos (A – D) + sin (A – B) cos (C – D) + sin (C – A) cos (B – D)?

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 24200, and Rs 26620 respectively, what is the rate of interest?

If x = y + 2 then x3 - y3 - z3 is

Two numbers are in the ratio 3:5. If 6 is added to both of them, the ratio becomes 2:3. The numbers are

If (1 - cosA)/2 = x, then the value of x is

If cosecA - cotA = x, then the value of x is

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

A retailer gets a discount of 40% on the printed price of an article. The retailer sells it at the printed price. His gain percent is