Quantitative Aptitude - Arithmetic Ability Questions

What is the reflection of the point (3,-5) in the origin?

What is the value of [(sin 59° cos 31° + cos 59° sin 31° )÷(cos 20° cos 25° – sin 20° sin 25° )]?

If 3a+4b3c+4d = 3a-4b3c-4d, then 

Simplify (b2x 3a2z4 ) × (b2x 4a4z3 )/(a3b2z4 )

What is the value of x4+y4 when the value of x3+y3=8 and x+y=2 ?

In ΔABC measure of angle B is 90 deg. If cosA = 5/13, and AB = 10 cm, then what is the length (in cm) of side BC?

You have 20 big and 16 small diaries and want to make gift packs containing both in each pack. What is the maximum number of gift packs you can make without any left over?

What is the area (in square units) of the figure enclosed by the graphs of the lines x = -4, x = 2, y = -2 and y = 3?