Quantitative Aptitude - Arithmetic Ability Questions

The reciprocal of the sum of the reciprocals of 3/8 and 8/11 is:

Coefficient of x2 in 4x3 - 2x2 + 2x -­ 3 are

Which of the following quadratic equations has real roots?

If 1/√(1 -­ sin2A) = x, then the value of x is

The value of 8(sin6θ + cos6θ) - 12(sin4θ + cos4θ) is equal to

If 2x+ 4(x - 3) < -2 - x < 2x - 1, then find the value of x.

Two water squash mixtures, the first with a water-to-squash ratio of 5:1 and the letter with a ratio of 3:1 are blended in the ratio 3:2. What is the final water : squash ratio in the blend?

If the selling price of an article is doubled, then its loss percentage gets converted into the equal profit percentage. What is the loss percentage?