If seven cats kill seven rats in 7 minutes, how many would be needed to kill one hundred rats in 50 minutes?

Answer: 14.

More Tricky Riddles with answers

More Tricky Riddles

If six children and two dogs were under an umbrella, how come none of them got wet?
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If you drop the soap on the floor, is the floor clean or the soap dirty?
If you have three oranges and you take away two, how many will you have?
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if you put roast in a roaster what do you put in toaster?