450
45
55
None of these
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:
The average of 25 results is 18. The average of first 12 of those is 14 and the average of last 12 is 17. What is the 13th result?
The average of 30 results is 20 and the average of other 20 results is 30 . what is the average of all the results?
The average of 4 positive integers is 59. The highest integer is 83 and the lowest integer is 29. The difference between the remaining two integers is 28. Which of the following integers is higher of the remaining two integers ?
