This gay-ass math question.

[JBERK]

Just call the local weather guy and ask? Or just check out my last link? It goes through it completely...

[jdubs]

I'm in college to be an engineer. It's 50 percent.

mathematically its easiest to look at it like this.

probability of it raining one day + probably of it not raining at all

.5*.5*.5 = 12.5*3(because it can rain on any of the 3 days) = 37.5%

now add in the day where it doesn't rain...

37.5% + ( .5 * .5 * .5)

50%

it amazes me how people forget this stuff lol. Googling this kind of information isn't always helpful either because look how many wrong answers there were on here. Its no different anywhere else. There is no reason to know this crap after school so everybody forgets