The average of x numbers is y<sup>2</sup> and the average of y numbers is x<sup>2</sup>. So, th…

The average of 10 numbers is 40.2. Later it is found that two numbers have been wrongly added. The first is 18 greater t…

The average of 50 numbers is 30. If two numbers, 35 and 40 are discarded, then the average of the remaining numbers is n…

The average price of 10 books is Rs.12 while the average price of 8 of these books is Rs.11.75. Of the remaining two boo…

The average of x<sub>1</sub>, x<sub>2</sub>, x<sub>3</sub> and x<sub>4</su…

Average of n numbers is a. The first number is increased by 2, second one is increased by 4, the third one is increased …

The average of the reciprocals of x and y is-

The mean of 20 items is 55. If two items 45 and 30 are removed, the new mean of the remaining items is :