Quantitative Aptitude - Arithmetic Ability Questions

What is the simplified value of (cos4 A – sin4 A)?

If √(cosec2A - 1) = x, then the value of x is

If x = 1.1, then what is the value of 4x2 -4x + 1 ?

If the shopkeeper sells an item at Rs 960 which is marked as Rs 1200, then what is the discount he is offering?

If the radius of a circle is increased by 16%, its area increases by

What is the value of (sin60° + 2/√3) ?

Pankaj has done 1/2 of a job in 12 days, Sainath completes the rest of the job in 6 days. In how many days can they together do the job?

The line passing through point (-3,1) and point (x,5) is parallel to the line passing through point (-2,-1) and point (6,3). What is the value of x?