Averages in Aptitude MCQ Quiz (Multiple Choice Questions And Answers)
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66. The average of the two-digit numbers, which remain the same when the digits interchange their positions, is:
- 55
- 50
- 65
- 60
- 9
- 18
- 27
- 36
68. The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers?
- 8
- 16
- 4
- 3
69. A family consists of grandparents, parents and three grandchildren. The average age of the grandparents is 67 years, that of the parents is 35 years and that of the grandchildren is 6 years. What is the average age of the family?
- 40
- 31.7142857142857
- 31
- 32