The average of nine numbers is 50. The average of first five numbers is 54 and that of the last three numbers is 52, then the sixth number is -

The average of 5 consecutive natural numbers is M. If the next three natural numbers are also included, how much more than M will the average of these 8 numbers be? 

The average of four consecutive odd numbers is 36. What is the smallest of these numbers?

The average of the three numbers is 60. The first number is one-fourth of the sum of the remaining two numbers, the first number is-

The average weight of 8 people increase by 2.5 kg when a new person comes in place of one of them weighting 75 kg. What is the weight of the new person?

If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55 and 60, then the average marks of all the students is: 

The average of 5 numbers is 27. If one number is excluded, the average becomes 25. The excluded number is: 

A cricketer's average score in 10 innings was 36. In his 11th innings, he scored some runs because of which his average increased to 40. What was his score in 11th innings?