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)?

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?

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 ?

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

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