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1 / 10

The mean is found by __________ all the numbers and then __________ by the number of items.

2 / 10

The average of runs of a cricket player in 10 innings was 32. How many runs must he make in his next innings to increase his average by 4?

3 / 10

The average of 20 numbers is zero. What is the maximum number of numbers that can be greater than zero?

4 / 10

The average age of a class is 40 years. 12 new students with an average age of 32 years join the class, decreasing the average by 4 years. What was the original number of students?

5 / 10

Find the average of 24, 30, 36, and 42.

6 / 10

A man’s average monthly salary for 10 months is $2000. How much does he need to earn in the next month to increase his average by $100?

7 / 10

A cricketer's scores in 5 matches are: 40, 50, 60, 80, 100. What is his average score?

8 / 10

The average of 10 observations is 50. If one observation, 45, is replaced with 60, what will be the new average?

9 / 10

The average age of a group of 5 boys is 16 years. If one boy aged 20 leaves the group, what will be the new average age?

10 / 10

What is the average of all prime numbers between 30 and 50?

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