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obs20 · 06-09-2010, 05:40 PM

The chance of 2 boys
At stage 1 is 1/4 BB BG GB GG

At stage 2 the chance is now 1/2 either BG or BB

At stage 3 it gets tricky. The chance of having either child born on a Tuesday is 2/7, of one of those children being a boy is 1/7. The chance of any particular child being a boy born on a Tuesday is 1/14. That being said we still are in the same predicament as stage 2 with one of the children being a boy. So I guess the odds at this stage are still 1/2.

06-09-2010, 05:40 PM	#6
obs20 Wizard Posts: 2,793 Karma: 29028512 Join Date: May 2010 Location: Florida Device: Sony PRS 600, Nook ST, Toshiba Excite 10.1 AT 300	The chance of 2 boys At stage 1 is 1/4 BB BG GB GG At stage 2 the chance is now 1/2 either BG or BB At stage 3 it gets tricky. The chance of having either child born on a Tuesday is 2/7, of one of those children being a boy is 1/7. The chance of any particular child being a boy born on a Tuesday is 1/14. That being said we still are in the same predicament as stage 2 with one of the children being a boy. So I guess the odds at this stage are still 1/2.