Amount five people with monthly income (in Rs.) 15000, 26000, 16000, 19000, 50000, how many will have income less than t…

After replacing an old member by a new member, it was found that the average age of five members of a club is the same a…

The average of the first nine prime numbers is-

The mean of 1<sup>2</sup>, 2<sup>2</sup>, 3<sup>2</sup>, 4<sup>2</sup>, …

The speed of the train going from Nagpur to Allahabad is 100 km/h while when coming back from Allahabad to Nagpur, its s…

The average age of four brothers is 12 years. If the age of their mother is also included, the average is increased by 5…

The average weight of a class of 24 students is 35 kg. If the weight of the teacher be included, the average rises by 40…

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