Quantitative Aptitude - Arithmetic Ability Questions

ΔABC is similar to ΔDEF. If the ratio of similar sides is K:1, the ratio of their areas is

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

What is the value of 643 × 121289 - 169 ?

23 x 31 = 713. How much is 0.0713 / 3.1?

What will come in the place of the question mark (?) in the following number series?305, 338, 404, 503, 635 , (?)

If the standard deviation of a population is 7, what would be the population variance?

A square park having a side 22 m has two roads each 2 m wide running in the middle of it and parallel to its length and breadth. What will be the cost of gravelling the path at the rate of Rs.100/sq.m?

By what least number should 1200 be multiplied so that it becomes a perfect square?