Quantitative Aptitude - Arithmetic Ability Questions

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

For x = 462+3, what is the value of x+22x-22+x+23x-23

If 2x + 2(4 + 3x) < 2 + 3x > 2x + x/2; then x can take which of the following values?

If cos ­-11π/6 = x, then the value of x is

A piece of work was finished by A, B and C together. A and B together finished 60% of the work and B and C together finished 70% of the work. Who among the three is most efficient?

Two water-squash mixtures, the first having a water-to-squash ratio of 4 : 1 and the other having a ratio of 3 : 1, are blended in the ratio 1 : 2. What is the water : squash ratio in the blend?

Which of the following numbers will have an irrational square root?

Two cars travel from city A to city B at a speed of 30 and 48 km/hr respectively. If one car takes 3 hours lesser time than the other car for the journey, then the distance between City A and City B is