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?
Choices.
A) 13 / 35 B) 14 / 35 C) 1 / 2 D) 5 / 6 E) 5 / 5
Explanation :   Total Cases: =7C3=35   Favourable Cases: (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.]   Hence (A) is correct answer.   13 / 35nswer : 13 / 35
<result>A</result>
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?