In Matt's pocket there are 8 watermelon jellybeans, 4 vanilla jellybeans, and 4 butter popcorn jellybeans. What is the smallest number of jellybeans he must take out of his pocket to be certain that he takes at least one of each flavour?
Possible answers - 3 4 8 9 13
Explanation of answer would be useful
cheers
13
has to take all of the two flavours that are most numerous, plus one other
13
13. Turn the question around and ask what is the largest number of beans he can take out leaving only a vanilla one.
13
suppose the first 12 are 8 watermelon and 4 vanilla, 13th has to be butter.
gone on, why am I wrong?
Spelling challenge!!
13
9,
Their is a chance (all be it very small) that you could pick the 4 vanilla & the 4 butter popcorn before you pick one watermellon. Hence 9 jellybeans.
Off to the shop now to buy jellybeans.
Ok so I was wrong!!!
Spelling challenge!!
13
working ??
pretty obvious I think...
Question for you
Odds on picking three correct ones first three goes...
bigsurfer - Better check your change carefully then !!
'Odds on picking three correct ones first three goes... '
hmm
it might be 8/13 * 4/12 * 4/11
but it probably isn't. i was always rubbish at probabilty.
7.5% allegedly
Question for you
Odds on picking three correct ones first three goes...
Please could you define a incorrect jellybean?
you are all making the assumption he does not have a hole in his pocket.
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