What distinguishes Non-formal education from Informal

In the following question, select the related letters from the given alternatives.

PTX : RVZ :: CGK : ? 

Study the following figure and answer the question that follows.

Study the given pattern carefully and select the number that can replace the question mark (?) in it.

X # Y means 'X is the brother of Y'

X @ Y means 'X is the daughter of Y'

X & Y means 'X is the husband of Y'

Select the Venn diagram that best represents the relationship between the following classes.

Blue, Water, Star

Find the next number in the series.

8100, 2700, 450, ? 

Read the following logic and answer the given question. 

A + B is the mother of A, B. 

AB is the father of A, B. 

Select the option figure that will replace the question mark (?) in the figure given below to complete the pattern.

In a code language, 'MUSCLE' is coded as USMLEC and 'FINGER' is coded as INFERG. How will 'THROAT' be coded in the same language?

Which of the following alternatives will replace the question mark?

Ignition, Acceleration, Motion, Deceleration, ?