In a dancing competition each competition could dance to at least 1 brand of music,played 2,brand of music:Fuji music and jazz music were played that day,10 of the competitor could dance to jazz music if 4 of the competitors could dance 2 both dance of music, find 1.The number of the competitor that could dance to Fuji but not to jazz.2 The number of the competitors that could dance to jazz but not Fuji.3The total number of people involve in competitors.?
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Asked by zion on 15th May, 2022
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