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? 

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

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?

Select the option that is related to the third term in the same way as the second term is related to the first term and the sixth term is related to the fifth term.
 25 : 264 :: 31 : ? :: 49 : 456

If HEROISM is coded as SVILRHN, then how will ALP be coded as?

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

Arrange the given words in the sequence in which they occur in the dictionary.
1. Energy
2. Earlobe
3. Economics
4. Edition
5. Editor

Find the missing number from the given figure?