If the average of x and $$\frac{1}{x}$$ (x $$ \ne $$ 0) is M, then the average of x<sup>2</sup> and $$\frac…

The average temperature for Wednesday, Thursday and Friday was 40<sup>°</sup>C. The average for Thursday…

The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. Wha…

A coaching institute has students in 3 batches – X, Y and Z. In a certain examination, the average marks obtained …

The marks of six boys in a group are 48, 59, 87, 37, 78 and 57. What are the average marks of all six boys?

The average weight of three boys A, B and C is $$\frac{{163}}{3}$$ kg, while the average weight of three boys B, D and E…

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

The average age of 40 students of class is 18 years. When 20 new students are admitted to the same class, the average ag…