BGonline.org Forums

probability

Posted By: Christian Munk-Christensen
Date: Wednesday, 30 July 2008, at 7:33 a.m.

Based upon the assumption that each time a child is born it's 50-50 if it's a boy or a girl, what is the answer to the question below:

A couple has 2 children.

At least 1 of these children is a girl.

What is the probability that the couple has 2 girls?

Messages In This Thread

• probability
  Christian Munk-Christensen -- Wednesday, 30 July 2008, at 7:33 a.m.
  • probability
    Daniel Murphy -- Wednesday, 30 July 2008, at 8:15 a.m.
    • probability
      Christian Munk-Christensen -- Wednesday, 30 July 2008, at 8:18 a.m.
    • probability
      Chuck Bower -- Wednesday, 30 July 2008, at 12:25 p.m.
      • probability
        Randy -- Wednesday, 30 July 2008, at 2:59 p.m.
        • probability
          Gregg Cattanach -- Wednesday, 30 July 2008, at 7:09 p.m.
  • probability
    bob koca -- Wednesday, 30 July 2008, at 8:22 a.m.
    • probability
      Tom Keith -- Wednesday, 30 July 2008, at 1:58 p.m.
      • probability
        garyo -- Wednesday, 30 July 2008, at 5:02 p.m.
      • probability
        Daniel Murphy -- Wednesday, 30 July 2008, at 6:12 p.m.
        • probability
          Bob Koca -- Saturday, 2 August 2008, at 3:37 p.m.
          • probability
            Daniel Murphy -- Saturday, 2 August 2008, at 6:22 p.m.
    • probability
      pfeifrot -- Wednesday, 30 July 2008, at 3:21 p.m.
      • probability
        Jason Lee -- Wednesday, 30 July 2008, at 5:02 p.m.
  • probability
    neilkaz -- Wednesday, 30 July 2008, at 7:33 p.m.
    • probability
      Stick -- Thursday, 31 July 2008, at 10:28 p.m.