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?

29 boys are standing in a line such that distance between any two consecutive boys is same . A teacher takes 7 seconds to reach from first boy to 15th boy. How much more time (in seconds) will he take to reach the 22 boys? 

Total wages of 6 men, 4 women and 8 boys are Rs 26. If the wages of 6 men is equal to that of 8 women and the wages of 4 women is equal to that of 6 boys, then find out the total wages of 8 men, 6 women and 4 days? 

Three numbers are in the ratio 5: 7: 12. If the sum of the first and the third numbers is greater than the second number by 50. The sum of the three numbers is 

A bank offers a 20% compound interest per half year . A customer deposits Rs. 2800 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is______

If a vendor sells apples at Rs 170 per kg he suffers 15 % loss. If he sells at Rs 230 per kg, then what is his profit percentage?