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2024-01-20 22:07:56
Newton used to read science books when he was a boy.
2024-01-20 22:04:34
1. 8 phần tử
2. x= -1
2022-10-05 21:35:29
Tóm tắt:
90 người :15 ngày
+ 45 người
135 người :? ngày
Giải
Số gạo đó đủ cho 135 người ăn trong số ngày là:
90 x 15 : 135 = 10 (ngày)
ĐS: 10 ngày