The mean of the first ten even natural number is-

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

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

The average of all the odd integers between 2 an 22 is ?

A car owner buys petrol at Rs. 17, Rs. 19 and Rs. 20 per litre for three consecutive years. Compute the average cost per…

The captain of a cricket team of 11 members is 26 years old and the wicket keeper is 3 years older. If the ages of these…

The average of the first 100 positive integers is -

The average monthly salary of 660 workers in a factory is Rs. 380. The average monthly salary of officers is Rs. 2100 an…