Quantitative Aptitude - Arithmetic Ability Questions

In the following question, four number pairs are given. The number on left side of (–) is related to the number on 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

Find equation of the perpendicular bisector of segment joining the points (2,­6) and (4,0)?

If 3x + 2 < 2x + 1 and x ­- 4 ≤ 2x -­ 1; then x can take which of the following values?

The mean of a distribution is 20 and the standard deviation is 4. What is the value of the coefficient variation?

The mean of a distribution is 21 and the standard deviation is 7. What is the value of the coefficient variation?

Select the odd number from the given alternatives.

select the odd word/letters/number/number pair from the given alternatives.

A person lent certain sum of money at 5% per annum simple interest and in 15 years the interest amounted to Rs 250 less than the sum lent. What was thesum lent (in Rs)?