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 aLogic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

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

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

An angle is 60 deg more than one fifth of its complement. Find the smaller angle in degrees.

20 is 0.25% of?

What is the reflection of the point (5, 2) in the line x = -3?

If 4x + 5y = 14 and x - 5y = 16 then the value of x and y are

If 3√7 + √343 = 19.21, then find the value of √252 + 20√7.