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The correct answer is B
If average of first 9 numbers is (n – 50) and the sum of remaining number is 1620. Find the value of ‘n’, if the average of 21 numbers is ‘n’....
The average weight of 48 students in a school is 32 kg. If two new students with weights of 'x' kg and '(x + 6)' kg join the group, the average weight o...
The average of five even numbers is 68. If we replace two of these even numbers, 84 and 92, with a single even number X, the new average decreases by 4....
There are three distinct numbers ‘a’, ‘b’ and ‘c’. If, a = 150, (a + b) = 450 and (c – b) = 60, then find the average of a, b and c.
...The average of four consecutive odd numbers is 47. What is the largest of these numbers?
The average of six numbers is 8. When three new numbers are included in such a way that the first number is twice the second and second number is thri...
The average number of books on history, polity and geography in a library is 144, and the average number of books on history and geography is 140. If th...
Find the value√(2k+11) 
where ...
The average of 13 numbers is 10.The average of first 6 numbers is 8 and that of the last 6 numbers is 10. What will be the 13th number?
Average weight of a team of 19 persons is 30 kg. When one more person joins the team, the average weight of the team increases by 3 kg. Find the weight ...
