A bag has 1, 3, 5, 7, 9,11 and 13 cm sticks. Find the probability that they they will form a triangle if 3 sticks are drawn?

• Answer: is 13/35
  Total: =7C3=35
  Fav: (3,5,7),(3,7,9),(3,9,11),(3,11,13),(5,7,9),(5,7,11),(5,9,11),(5,9,13),(5,11,13),
  (7,9,11),(7,9,13),(7,11,13),(9,11,13)=total 13.
  [Others are rejected because to form a triangle it is necessary that the sum of 2 small
  sides must be greater than the third greatest side.]
• 11 years agoHelpfull: Yes(117) No(3)
• Mr Max i think that the condition for triangle is any 2 side of a triangle should be greater than third side. i did'nt find your condition in any book
• 11 years agoHelpfull: Yes(7) No(35)
• Its a very nice question, the answer will be 13/35.
• 11 years agoHelpfull: Yes(2) No(1)
• 7c3 ways so ans 13/35
• 11 years agoHelpfull: Yes(1) No(3)
• 33/35 is the ans
• 11 years agoHelpfull: Yes(1) No(10)
• hey max where is(157)???
• 11 years agoHelpfull: Yes(0) No(5)
• 13/35 it will be
• 10 years agoHelpfull: Yes(0) No(0)