The average of 25 observations is 13. It was later found that an observation 73 was wrongly entered as 48. The new avera…

A cricketer has a mean score of 60 runs in 10 innings. Find out how many runs are to be scored in the eleventh innings t…

Find the average of cubes of first 49 positive integers.

A librarian purchased 50 storybooks for his library. But he saw that he could get 14 books more by spending Rs. 76 more …

If the mean of 5 observations x, x + 2, x + 4, x + 6 and x + 8 is 11, then the mean of the last three observations is-

The monthly incomes of five persons are Rs. 1132, Rs. 1140, Rs. 1144, Rs. 1136 and Rs. 1148 respectively. What is their…

The average weight of first 11 persons among 12 persons is 95 kg. The weight of 12<sup>th</sup> person is 33…

The average of 5 consecutive integers starting with 'm' is n. What is the average of 6 consecutive integers starting wi…