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The correct answer is D
15 years ago, the average age of all the 80 teachers of the college was 50 years. 8 years ago, the principal has retired from her post at the age of 60 ...
The average of all prime numbers between 32 and 69 is.
The average of the first 10 numbers is 'x+20', the average of the next 14 numbers is 'x', and the average of the remaining 16 numbers is 'x−30'. If th...
The average of four consecutive odd numbers is 34. Find the largest of these numbers.
Average run scored by a batsman in 20 innings is 90. In next 6 innings, he scored runs with an average of ‘x’ so that his overall average increases ...
The average of 8 numbers is 22. When two new numbers 'p' and 'q' are added, the average increases by 3. If p - q = 10, find the value of q.
The average of five consecutive natural numbers is 14. What will be the average of the seven numbers if the next two natural numbers are also included?
In an examination, a student has an average score of 84. If he had scored 14 more marks in Science and 19 more marks in English, his average would incre...
