The body weight of seven students of a class is recorded as 54 kg, 78 kg, 43 kg, 82 kg, 67 kg, 42 kg and 75 kg. What is …

The average age of P, Q and R is 15 years more than R's age. If the total age of P and Q together is 39 years, then R's …

B was born when A was 4 years 7 months old and C was born when B was 3 years 4 months old. When C was 5 years 2 months o…

The average of seven numbers is 18. If one of the numbers is 17 and if it is replaced by 31, then the average becomes :

Of the three numbers, the average of the first and the second is greater than the average of the second and the third by…

A cricketer scored some runs in his 21st innings, as a result, his average runs increased by 3. If the present average r…

The arithmetic mean of the following numbers : 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6 and 7, 7, 7…

The average age of seven boys sitting in a row facing North is 26 years. If the average age of the first three boys is 1…