Geometry
posted by Lisa on .
A bag contains five pieces pf paper wit hthe emasures of various angles. The angle measures are 23,35,23,41,113. Suppose you pick 3 pieces of paper from the bag at random. What is the probability you can form an isosceles triangle with the three angles?

There is only one pair of equal angles, so the number of triples which are isosceles is 3
that is, 23 23 35, 23 23 41, and 23 23 113
total number of triplets:
1. 23 not in the triple  1
2. one 23  choose 2 from the remaining 3 , C(3,2) = 3
3. two 23's  3
a total of 7
here they are
35 41 113
23 35 41, 23 35 113, 23 41 113
23 23 35, 23 23 41, 23 23 113
prob of your event = 3/7 
Outstanding! Thanks!!

Who is Butch?

Lisa, Butch  you are the same person. Please don't play games with us.

Hi Miss Sue, totally not playing. My husband and i are taking the same class, and asking the same questions. He just happened to repoy to mine. We appreciate all of your help. God Bless!

I have a question! Can someone please answer the same question but with the numbers 35, 56, 35, 84,110