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 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.

What is the reflection of the point (5, -2) in the line x = -1?

What are the co-ordinates of the centroid of a triangle, whose vertices are A(-2,5), B(3,-2) and C(5,3)?

Select the odd number from the given alternatives.

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

If (x ­- 2) (x -­ p) = x2 - ax + 6, then the value of (a -­ p) is

If sec2A cosec2A = x, then x is

Convert decimal number 101 to binary.