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Byju's Answer
Standard XII
Mathematics
Permutation: n Different Things Taken r at a Time
Six friends A...
Question
Six friends A, B, C, D, E, and F are sitting around a circular table, such that:
Who is sitting opposite D?
A
E
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B
A
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C
B
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D
C
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Solution
The correct option is
A
E
Let's take each clue into consideration.
1) A is sitting opposite C.
2) C is sitting adjacent to E.
So, two cases are possible:
3) B is sitting adjacent to A and E.
4) An equal number of friends are sitting between B and F.
It means that B and F are sitting opposite each other.
D will sit at the only place left in both the cases.
Hence, E is sitting opposite D.
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Permutation: n Different Things Taken r at a Time
Standard XII Mathematics
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