Yield of soya bean per acre in quintals in Mukund's field for 7 years was 10, 7, 5, 3, 9, 6, 9 . Find the mean of yield per acre.

Solve the following subquestion: Yield of soya bean per acre in quintals in Mukund’s field for 7 years was 10, 7, 5, 3, 9, 6, 9. Find the mean yield per acre.

Yield of soyabean per acre in quintal in Mukund's field for 7 years was10, 7, 5, 3, 9, 6,9. Find the mean of yield per acre:

What is the median of 7, 10, 7, 5, 9, 10?

What is the mean of 1, 3, 5, 7, 9, 11, 13?

If the mean of 3, 7, 11 and x is 9, what is the value of x?

What is the mean of 3, 5, 7, 9, 11, 13, 15?

If U = {1, 3, 5,7, 9} and A = { 1, 7, 9}, write A'.

If 3x+5y=9,5x+3y=7 then find the value of x-y .