Quantitative Aptitude - Arithmetic Ability Questions

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

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

Given: x -­ 5 ≤ 2x -­ 3 and 2x - ­1/2 ≥ 5x + 2; then x can take which of the following values?

Two students appeared for an examination. One of them secured 9 marks more than the other and his marks were 56% of the sum of their marks. The marks obtained by them are

If a3 + b 3 = 35 and ab = 6, then what is the value of a + b?

If cot π/3c -­ tan π/4c = x, then the value of x is

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

If x = cosecθ - sinθ and y = secθ - cosθ, then the relation between x and y is