On a 30 day calendar which begins on a Wednesday and ends on a Thursday, what is the probability in a random drawing that the date would be a Monday?
Algebra - Reiny, Tuesday, February 12, 2013 at 8:19am
Look at May 2013 and just forget about the last day.
That would fit your description.
Aren't there 4 Mondays?
so prob(a Monday) = 4/30 = 2/15