Some boys are  sitting in a row. P is sitting fourteenth from the left and Q is seventh from the right. If there are four boys between P and Q, how many boys are there in the row ?

Study the following arrangement carefully and answer the questions given below:
M 5 $ P 6 W ! R 5 B 4 7 H @ O 7 # V  Y  N & * A   8 J ! Q  U % G L 7 F  C E   & X  Z  S 1 © 3 K β

If all the numbers and symbols are deleted from the above arrangement, which of the following will be the fourth to the left of the eleventh from the right end? 

Ajit is ranked seventh from the top and twenty-fifth from the bottom in a class. How many students are there in that class? 

In a class of thirty-eight students, Z is 13th from the left end and X is 2th to the right of Z and P is 1th to the left of X then how many students are to the right of X and what is the position of P from the right end? 

If Ganesh ranks 9th from the top and 38th from the bottom, then how many students are there in the class?

In a class, P has more marks than Q and R does not have the least marks. S has more marks than T and T has more marks than P, who among them will have the least marks? 

In a row of books a book of English is 16th from left end of row. A book of Mathematics is 12th from the right end. If the Mathematics book is 6th to the right of the English book, then how many total books are in the row?

Study the following arrangement carefully and answer the questions given below:
M 5 $ P 6 W ! R 5 B 4 7 H @ O 7 # V  Y  N & * A   8 J ! Q  U % G L 7 F  C E   & X  Z  S 1 © 3 K β

How many such numbers are there in the above arrangement each of which is either immediately followed or preceded by a letter but not both?