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Averages Quiz 13 (10 MCQs)

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1. The average age of the committee of 10 members is 40 years. A member of age 52 retires and a new member of age 38 takes his place. What is the average age of the present committee?
2. The weights of 5 boys in a class are 49.6 kg, 39.8 kg, 40.8 kg, 45.2 kg and 24.6 kg respectively.Find there average weight.
3. Find the average of first 7 even numbers
4. Jamal scored 62, 75, 76, and 90 on four tests. What does he need to score on the fifth test in order to have a mean of exactly 80?
5. ARITHMETIC MEAN OF A SERIES IS 15 AND IF 5 IS ADDED IN ALL THE ITEMS OF THIS SERIES, THE NEW ARITHMETIC MEAN WILL BE:
6. Find the mean:12, 15, 18, 13, 6, 14
7. You are playing a board game. Over the course of the game, you take 12 turns, for which you make movements between spaces. During these turns, you move the following number of spaces: 6, 4, 5, 12, 10, 7, 8, 11, 3, 2, 7, and 6. What is the average number of spaces you move each turn during the game?
8. Find the median of these numbers:4, 2, 7, 5, 3, 5
9. A physicist measures the speed of a moving object at four intervals: 10 m/s, 12 m/s, 11 m/s, and 13 m/s. What is the average speed of the object?
10. Find the average of cubes of first 7 consecutive natural numbers
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