Try not to read others solutions but after you think on your own...
1. Three kinds of apples are mixed in a basket. How many apples do you need to take to make sure you have at least two apples of the same kind, (that means at least one pair of similar apples) ? All together there are 24 apples in the basket, 8 from each kind.
2. If 3 cats catch 3 rats in 3 minutes, how many cats will catch 100 rats in 100 minutes?
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