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 persons A, B, C, D, E and F are 6, 8, 11, 16, 17 and 21 years old not necessarily in the same order. A is older than B but younger than F. C is 10 years older than B. F is not 17 years old. C is older than F. D is not the oldest person. What is the difference between the ages of A and E?
  • a)
    5 years
  • b)
    10 years
  • c)
    13 years
  • d)
    6 years
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
persons A, B, C, D, E and F are 6, 8, 11, 16, 17 and 21 years old not ...
C is 10 years older than B. Therefore, the ages of C and B can be (16,6) or (21,11) in that order. 
A is older than B but younger than F. 
C is older than F.
If the age of B is 11, then the age of A must be 16, the age of F must be 17 and age of C must be 21. However, it has been given that C is not 17 years old and hence, we can eliminate this condition.
Therefore, B must be 6 years old, A must be 8 years old, F must be 11 years old and C must be 16 years old. D is not the oldest person. Therefore, D must be 17 years old and E must be 21 years old.
Difference between the ages of A and E = 21 - 8 = 13 years. Therefore, option C is the right answer.
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Most Upvoted Answer
persons A, B, C, D, E and F are 6, 8, 11, 16, 17 and 21 years old not ...
Understanding the Problem
We have six persons A, B, C, D, E, and F with ages 6, 8, 11, 16, 17, and 21 years. We need to determine the ages based on the clues provided.
Clue Analysis
- A is older than B but younger than F.
This indicates: B < a="" />< />
- C is 10 years older than B.
So, if B is x years old, then C is x + 10.
- F is not 17 years old.
F can only be 21, 16, or 11.
- C is older than F.
Therefore, C > F.
- D is not the oldest person.
This means D cannot be 21 years old.
Age Assignments
Let's examine the possible ages step-by-step:
1. If B is 6, C would be 16 (6 + 10), leaving F to be older than 16. But F cannot be 17, so F has to be 21. Hence, A is 11 (since A has to be older than 6 and younger than 21). This assignment works:
- A = 11
- B = 6
- C = 16
- F = 21
2. D must be 8 (the only age left), confirming D is not the oldest.
Now, we have:
- A = 11
- B = 6
- C = 16
- D = 8
- E = 17
- F = 21
Calculating the Age Difference
Now, we need to find the difference between the ages of A and E:
- A = 11
- E = 17
Difference:
The difference between A and E is 17 - 11 = 6 years.
Conclusion
The correct answer is not option 'C' (which states 13 years) based on the initial analysis. The actual difference is 6 years, which would align with the 6 years option if it was provided. Please verify the problem statement for any potential errors.
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persons A, B, C, D, E and F are 6, 8, 11, 16, 17 and 21 years old not necessarily in the same order. A is older than B but younger than F. C is 10 years older than B. F is not 17 years old. C is older than F. D is not the oldest person. What is the difference between the ages of A and E?a)5 yearsb)10 yearsc)13 yearsd)6 yearsCorrect answer is option 'C'. Can you explain this answer?
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