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Seven relatives of a man comprises four ladies and three gentlemen: his wife has also seven relatives-three of them are ladies and four gentlemen. In how many ways fan they invite 3 ladies and 3 gentlemen at a dinner party so that there are three man's relatives and three wife's relatives?

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A man has 7 relatives ,4 of them are ladies and 3 are gentlemen , his wife has also 7 relatives , 3 of them are ladies and 4 are gentlemen . In how many ways can they invite a dinner party of 3 ladies and 3 gentlemen so that there are 3 of the man 's relative and 3 of the wife 's relative ?

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