If the average of 6 consecutive even number is 25, the difference between the largest and the smallest number is :

Out of 10 teachers of a school, one teacher retires and in place of him a new teacher 25 years old joins. As a result of…

The average of 7 consecutive numbers is 20. The largest of these numbers is-

The average of x numbers is y<sup>2</sup> and the average of y numbers is x<sup>2</sup>. So, th…

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 age of 30 students is 9 years. If the age of their teacher is included, the average age becomes 10 years. Th…

The average weight of a group of 20 boys was calculated to be 89.4 kg and it was later discovered that one weight was mi…

What is the average of the first six (positive) odd number each of which is divisible by 7?