Red/Black Marbles

4?????

To my calculations:
The lowest number is 4, that is if ou pull out a red and black out of the red/black bag. But it is impossible to get a correct number. Because you could pull out the same colour marble over and over again untill you run out of that colour.

The lowest number is 1.

Pull one marble out of the bag labeled "black and red", whichever color you pull out, you know all the marbles in that bag are that color. It can't be a mixture because the bag was labeled incorrectly.

Suppose the original marble you pulled out was black. Now you also know that the bag labeled "black" must actually contain "red" and the bag labeled "red" must actually contain "black and red".

If the bag labeled "black" contained black and red marbles, that would have left the third bag, labeled "red" containing only red marbles, which would have contradicted the statement that all bags are incorrectly labeled.

What ped' said.

If that is the answer, then this riddle is flawed. Because it was never specified that all of the bags were labelled incrorrectly, only that "the label's were incorrect." If one of the labels were correct, and the other two were incorrect, it would still be a true statement that "the label's were incorrect" because you only need to find one contradiction to make the statement false.

I don't see any problem with the wording of the riddle. It says the labels are wrong. To most standard english speakers, that sentence would be interpreted as "all the labels are wrong".

If I told you "I ate 3 pretzels, and the pretzels were stale", most people would know that I meant all 3 pretzels I ate were stale.

Assuming the riddle has a solution, ped's interpretation must stand otherwise no "information" can be extracted without potentially drawing ALL the marbles.

well...I'm sorry, but you're wrong. It's not a matter of opinion, it's discrete math, which can be thought of as the math of language, and there's no room for interpretation.

good job pedro!
yes, the answer is 1, just as pedronunezmd said.

apologies to stuh for the missing "all".

sorry for making such a fuss...I'm a bit technical.