Quantitative Aptitude - Arithmetic Ability Questions

[sinA/(1 + cosA)] + [(1 + cosA)/sinA] is equal to

What is the value of Sin 30° - Cosec 45°?

What is the value of 1.23+0.83+0.73-2.0161.351.22+0.82+0.72-0.96-0.84-0.56 =

If the side of a square is increased by 20%, then what will be the percentage increase in its perimeter?

Two identical hemispheres of maximum possible size are cut from a solid cube of side 14 cm. The bases of the hemispheres are part of the two opposite faces of cube. What is the total volume (in cm3) of the remaining part of the cube?

If 4x + 1x = 5, (x≠0), then the value of 5x4x2+10x+1 is

If 3x+22x+1 = a2x+1+bx+2 be an identity, then the value of b

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?