The average of 10 items was found to be 80 but while calculating, one of the items was counted as 60 instead of 50. Then the correct average would have been
The average of 10 numbers is 40.2. Later it is found that two numbers have been wrongly added. The first is 18 greater than the actual number and the second number added is 13 instead of 33. Find the correct average.
The Average of 100, 200, 300, 400, ... , 1000 is 550. If each number is divided by 5, then the new average will be equal to
The average of 11 numbers is 10.9. If the average of the first six numbers is 10.5 and that of the last six numbers is 11.4, then the middle number is
The average of 11 numbers is 60. If the average of the first six numbers is 58 and the average of the last six numbers is 63, then what is the sixth number?
The average of 11 observation is 60. if the average of first five observations is 58 and that of last five is 56, the sixth observation is?
The average of 12 numbers is 15 and the average of the first two is 14. What is the average of the rest?
The average of 18 observations is recorded as 124. Later it was found that two observations with values 64 and 28 were entered wrongly as 46 and 82. Find the correct average of the 18 observations.
The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero ?
The average of 20 students is 12 years, if the teachers age is included, average increases by one. The age of the teacher is:
