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huuchien12169
2 năm trước
Cho 2 tập hợp A = { 2; 3} và B = { -1; 3; -5} a) Có bao nhiêu tổng a+ b ( với a thuộc A; b thuộc B) được tạo thành b) Trong các tổng a+b , có bao nhiêu tổng là bội của 3? Có bao nhiêu tổng là ước của 24 Mong các bạn gúp mình Mình đang cần gấp -.-
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