Quantitative Aptitude - Arithmetic Ability Questions

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.

Compute : 4082 / 157 - 23

If the standard deviation of a population is 6.5, what would be the population variance?

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.

The difference between compound interest and simple interest on a certain sum of money for 2 years at 5% per annum is Rs. 41. What is the sum of money?

If secθ + tanθ = 4, then secθ - tanθ = ?

The least number that must be substracted from 63520 to make the result a perfect square is

What will be the equation of the perpendicular bisector of segment joining the points (5,­3) and (0,2)?