In James apartment block there are 27 apartments with a dog,33 with a cat, and 17 with a dog and a cat.35 apartments have neither a cat nor a dog
a)how many apartments are in the block
b)how many apartments contain
i)a dog but not a cat ii)a cat but not a dog
iii)no dog iv)no cats
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Answer:
a 112
bi 44
b ii 50
b iii 68
b iv 62
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