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Average - Data Intensity 2 Multiple Questions and Answers.
| 37. | The average of first five prime numbers greater than 20 is___? | ||
| A. | 31 | ||
| B. | 31.01 | ||
| C. | 32 | ||
| D. | 32.2 | ||
| 38. | The average of 9 observations was 9, that of the 1st of 5 being 10 and that of the last 5 being 8. What was the 5th observation? | ||
| A. | 9 | ||
| B. | 8 | ||
| C. | 7 | ||
| D. | 6 | ||
| 39. | The average of 1st 3 of 4 numbers is 16 and of the last 3 are 15. If the sum of the first and the last number is 13. What is the last numbers? | ||
| A. | 8 | ||
| B. | 6 | ||
| C. | 5 | ||
| D. | 2 | ||
| 40. | The average age of three boys is 15 years and their ages are in proportion 3:5:7. What is the age in years of the youngest boy? | ||
| A. | 15 | ||
| B. | 9 | ||
| C. | 18 | ||
| D. | 21 | ||
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