The average of the squares of first ten natural numbers is-

The average pocket money of 3 friend A, B, C is Rs. 80 in a particular month. If B spends double and C spends triple of …

The average of 25 observations is 13. It was later found that an observation 73 was wrongly entered as 48. The new avera…

The average age of 40 students of class is 18 years. When 20 new students are admitted to the same class, the average ag…

A has 50 coins of 10 paise denominations. While B has 10 coins of 50 paise denominations. C has 20 coins of 25 paise den…

Total expenses of a boarding house are partly fixed and partly varying linearly with the number of boarders. The average…

The average marks in Science subject of a class of 20 students is 68. If the marks of two students were misread as 48 an…

The frequency distribution data is given below. If the average age is 17 years, the value of m is<br> <table cl…