Quantitative Aptitude - Arithmetic Ability Questions

If 35% of A's income is equal to 25% of B's income, then the ratio of A's income to B's income is

If a = 2 , b = ­3 then the value of 27a3 - 54a2b + 36ab2 - 8b3 is

In the following question, four number pairs are given. The number on left side of (–) is related to the number of the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

If 56 × 75 × 60 × 84 × 210 = 2p × 3q × 5r × 7s, then what is the value of [(p + q)/s] + r?

In each question two equations numbered I and II are given,you haveto solve both the equation and choose the correctanswer.

$$\begin{gathered} I. 5x2+ 28x = -15 \\ II. 3y2+ 11y + 6 = 0 \end{gathered}$$

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

The standard deviation of the set {10, 11, 9, 11, 9} is

If a cylinder of radius 4 cm and height 8 cm is melted and constructed into a cone of the same radius, what will be the height of this cone?