The average pocket money of 3 friend A, B, C is Rs. 80 in a particular month. If B spends double and C spends triple of …

Mr. Joe’s family consists of six people-himself, his wife and their four children. It is known that the average ag…

The average age of husband and his wife was 23 years at the time of their marriage. After five tears they have a one-yea…

The mean of 25 observations was found to be 78.4. But later on it was found that 96 were misread as 69. The correct mean…

The following table shows the number of working hours and the number of employees employed in a small scale industry<…

The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?

The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is ?

In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the run rate in the remaining 40 over…