A batsman makes a score of 270 runs in the 87<sup>th</sup> inning and thus increase his average by a certain…

The mean of 100 items was 46. Later on it was discovered that an item 16 was misread as 61 and another item 43 was misre…

In a certain factory there are five workers A, B, C, D and E. A can complete a work in 4 minutes, B in 5 minutes, C in 6…

A company produces on an average 4000 items per must for the first 3 months. How many items it must produce on an averag…

The average of the first five multiples of 9 is:

After replacing an old member by a new member, it was found that the average age of five members of a club is the same a…

The mean of 100 observations was calculated as 40. It was founder later on that one of the observation was misread as 83…

A library has an average number of 510 visitors on sunday and 240 on other days. The average number of visitors per day …