Find the average of all the numbers between 6 and 34 which are divisible by 5 -

Eight consecutive numbers are given. If the average of the two numbers that appear in the middle is 6, then the sum of t…

Out of four numbers the average of the first three is 16 and that of the last three is 15. If the last number is 20, tha…

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…

3 years ago the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is…

If the mean of a, b, c, is M and ab + bc + ca = 0, then the mean of a<sup>2</sup>, b<sup>2</sup>…

Average weight of 25 students of a class is 50 kg. If the weight of the class teacher is included , the average is incre…

The average weight of 8 men is increased by 1.5 kg when one of the men, who weight 65 kg is replaced by a new man. The w…