A man has 'n' magical eggs whose average weight is 'k' gm. Each of the 'n' eggs produces 'n' eggs next day such that the…

Nine persons went to a hotel for taking their meals. Eight of them spent Rs. 12 each on their meals and the ninth spent …

Out of 20 boys, 6 are each of 1 m 15 cm height, 8 are of 1 m 10 cm and rest of 1 m 12 cm. The average height of all of t…

The average of 10 items was found to be 80 but while calculating, one of the items was counted as 60 instead of 50. Then…

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

In a one-day cricket match the captain of one of the teams scored 30 runs more than the average runs scored by the remai…

The average mark of student in 4 subjects is 75. If the student obtained 80 marks in the fifth subject, then the new ave…

The average of the reciprocals of x and y is-