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| 1. |
3 yr. ago the average age of a family of 5 members was 17 yr. A baby having been born, the average age of the family is same today. The present age of the baby is : |
| A. | 3 yr. |
| B. | 1 yr. |
| C. | 11/2 yr, |
| D. | 2 yr. |
| Answer» E. | |