A survey of 240 families showed that 91 had a dog; 70 had a cat; 31 had a dog and a cat; 91 had neither a cat nor a dog, and in addition did not have a parakeet; 7 had a cat, a dog, and a parakeet. How many had a parakeet only?
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sir I am not able to go because you are able to go because you are
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