Quantitative Aptitude - Arithmetic Ability Questions

The number of students in a class is increased by 20% and the number now becomes 66. Initially the number was

Find equation of the perpendicular bisector of segment joining the points (2,-5) and (0,7)?

What are the co-ordinates of the centroid of a triangle, whose vertices are A(1, -5), B(-4, 0) and C(3, -4)?

Find out the odd word/letters/number/number pair from the given alternatives.

Find out the odd word/letters/number/number pair from the given alternatives.

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

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 .

Find out the odd word/letters/number/number pair from the given alternatives.