Which of the following diagram indicates the best relation between Spinach, Brinjal, and Vegetables?

B is twice as old as A but twice younger than F. C is half the age of A but is twice older than D. Who is the second oldest? 

Find the number of square in the given figure.

How many such pairs of letters are there in the word REGIONAL, each of which has as many letters between them in the word (in both forward and backward directions) as they have between them in the English alphabetical series?

Which number will come in the place of question mark?
45, 55, 66, 78, 91, ?

In a certain code language ‘SIGNATURE’ is coded as ‘U W T G Y U K I P’, then how is ‘KNOWLEDGE’ coded in that language?

If 'black' means 'pink', 'pink' means 'blue', blue means 'white', 'white' means 'yellow', 'yellow' means 'red' and 'red' means 'brown', then what is the colour of clear sky ? 

In this question relationships between different elements are shown in the statements. These statements are followed by two conclusions.
Statements D˂E˂F˂G
                    K˃F
Conclusion I. K≤G
                   II. K˃D