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Q: The number of ways that 7 teachers and 6 students can sit around a table so that no two students are together is

  • 1
    7! x 7!
  • 2
    7! x 6!
  • 3
    6! x 6!
  • 4
    7! x 5!
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Answer : 2. "7! x 6!"
Explanation :

Answer: B) 7! x 6! Explanation: The students should sit in between two teachers. There are 7 gaps in between teachers when they sit in a roundtable. This can be done in 7P6ways. 7 teachers can sit in (7-1)! ways.    Required no.of ways is = 7P6.6! = 7!.6!

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