Mathematics, 08.12.2021 15:30 itzdryoshi

BÀI 1 - Trên giá sách có 6 quyển sách khác nhau bằng tiếng Anh, 8 quyển sách khác nhau bằng tiếng Pháp, 10 quyển khác nhau bằng tiếng Đức a) Có bao nhiêu cách chọn 3 quyển sách cùng ngôn ngữ
b) Có bao nhiêu cách chọn 3 quyển sách, mỗi thứ một quyển
c) Có bao nhiêu cách chọn 2 quyển sách 2 ngôn ngữ

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BÀI 1 - Trên giá sách có 6 quyển sách khác nhau bằng tiếng Anh, 8 quyển sách khác nhau bằng tiếng Ph...

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