Quantitative Aptitude - Arithmetic Ability Questions

If cos 135° = x, then the value of x is

What is the value of (4/3) cot2 (p/6) + 3 cos2 (150) – 4 cosec2 45 + 8 sin (p/2)?

In the following question, select the odd letter pair from the given alternatives.

If x = 313- 3-13, then 3x2 + 9xis equal to

If x + 3y - 2z4 = 6, x + 232y + 3z = 33 and 17x + y +z + 2z =9, then what is the value of 46x+ 131y ?

The circumference of a circle is 110 cm. Find its radius (in cm).

A rectangular playground ground of length 125 m and width 75 m, has a walking strip of width 3 m in the middle of the ground, along the longer side. What is the area of the ground without the walking strip?

If 5x ­- 40 = 3x, then the numerical value of 2x -­ 11 is