There are 150 people at an international medical conference,40 are African, 70 are women and 110 are doctors. 12 of the women are African, 46 of the doctors are women and 31 of the Africans are doctors. If 5 of the African men are not doctors.(i) how many of the African women are doctors?(ii) how many of the men are neither African nor doctor?
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pls i have tried my best but to no avail
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