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? 

X is poorer than w, but not as poor as B. C is not as poor as x. Who is the poorest of all? 

Rakesh is 6 ranks ahead of Tanvir in a class of 42 students. If Tanvir’s rank is eighteenth from the last, then what is Rakesh’s rank from the start?

M is longer than B but shorter than P. K is longer than M. R is shorter than B. Who is the longest of them? 

Shailendra is shorter than Keshav but taller than Rakesh. Madhav is the tallest. Ashish is a little shorter than Keshav and little taller than Shailendra. If they stand in the order of increasing heights, who will be the second ? 

A class of boys stands in a single line. One boy is nine tenth in order from both the ends. How many boys are there in the class? 

Ravi is 7 ranks ahead of Summit in a class of 39. If Sumit's rank is seventeenth from the last, what is Ravi's rank from the start?