Four friends A, B, C, D are sitting in a coffee shop. A and B are sitting face to face. D is not sitting face to face. D is not sitting next of A but can see the facial expression of A clearly. B is talking to C who is sitting opposite to him who are sitting together? 

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?

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? 

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

The positions of the first and the second digits in the number 85341279 are interchanged. Similarly, the positions of the third and the fourth digits are interchanged and so on till the positions of the seventh and the eighth digits. Which of the following will be the third to the right of 3 after the rearrangement?