Originally Posted by ColinsMum
I think several of you protest too much. For someone who understands the maths one, and only one, of those answers is reasonable. Maybe over-thinking it is in some way fun, but I'd be concerned if my, or any, child couldn't actually pick the right answer easily.

How is comparing the chances of it being red with the chances of it not being red over thinking?

None of the options there are correct - perhaps one is reasonable if the question is rethought into 'which color marble is must likely to be drawn' but absolutely not as the question was asked.

BTW, please tell me if I am wrong about the chances of it being red versus non-red being even.

Last edited by madeinuk; 03/10/14 04:14 AM.
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