20 people are sit around the table.what is probability that 10 people are sit together?

• 20 people can arange themselves in 20! ways
  =================================================
  now taking 10 people together as 1
  remaining 10 peoples
  therefore (10 + 1)will arrange themselves by 11!
  so the req. prob = (11!)/(20!)
  
  
• 10 years agoHelpfull: Yes(3) No(0)
• ans is 1;
  because when 20 people are sit around the table,always there can be 10 people together.
  so no of chances =no of success
  so probability is 1;
• 10 years agoHelpfull: Yes(0) No(3)