a, b, c, d, e, f, g are consecutive even numbers. j, k, l, m, n are consecutive odd numbers. The average of all the numb…

Average weight of 25 persons is increased by 1 kg when one person weighing 60 kg is replaced by a new person. Weight of …

A company produces on an average 4000 items per must for the first 3 months. How many items it must produce on an averag…

Out of 9 persons, 8 persons spent Rs. 30 each for their meals. The ninth one spent Rs. 20 more than the average expendit…

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…

A student finds the average of ten 2 digits numbers. While copying numbers, by mistake, he writes in number with its dig…

Company C sells a line of 25 products with an average retail price of Rs. 1200. If none of these products sells for less…

Which one of the following numbers can be removed from the set S = {0, 2, 4, 5, 9} without changing the average of set S…