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Read the following lines and answer the questions that follow: -
There are a total of 5 different writers – A, B, C, D and E. They write their books and distribute them among their friends. It is also known that none of these friends are mutual with respect to each other. Also the following information is available:
(i) A has a total of 7 friends. Each of his friends has 4 friends.
(ii) B has a total of 5 friends. Each of his friends has 3 friends.
(iii) C has total of 4 friends. Each of his friends has 5 friends.
(iv) D has total of 6 friends. Each of his friends has 2 friends.
(v) E has total of 3 friends. Each of his friends has 5 friends.
If C has written 400 books, and D has written 600 books. These books are distributed equally among their respective friends by both of them. The friends of C do not distribute these books to their respective friends but the friends of D distributed the books they received among their respective friends. What will be the average of the number of books received by each of the friends of C and those received by each of the friend of the friends of D?
75
80
65
100
None of these
- There are 5 writers: A, B, C, D, and E, each with unique friends.
- C has 4 friends, each one receives 100 books (since 400 books are divided equally among 4 friends).
- D has 6 friends, each receives 100 books (600 books divided among 6 friends).
- Each friend of D has 2 friends. The 100 books each friend of D receives are distributed equally to their 2 friends, so each receives 50 books.
- To find the average:
- Friends of C receive 100 books each.
- Friends of friends of D receive 50 books each.
- Calculate the average: (100 + 50) / 2 = 75 books.
The correct answer is: Option 1: 75
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By: Parvesh Mehta ProfileResourcesReport error
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