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?  

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? 

If 246*2 = 6, 870*3 = 11, then what should 735*5 be?

In the year 1979 X - mas day was celebrated on Tuesday. When will it be celebrated on same day? 

Radhika went 50 metres south from her house then turned left and went 20 metres then turning , to north she went 30 metres. In which direction is her home from this point? 

If 'book' is called 'watch', 'watch' is called ‘bag’ , 'bag' is called 'dictionary' and ' dictionary ' is called 'window' , which is used to carry the books ? 

Directions: In the following question four words have been given, out of which three are alike in some manner and the for one is different. Choose out the odd one.

Find the missing number?
2, 15, 41, 80, ?