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2023-11-05 09:31:44
vì tuổi của cháu bao nhiêu tháng thì ông bấy nhiêu năm
đổi 1 năm =12 tháng
=> tuổi cháu 1/12 tuổi ông
tổng số phần bằng nhau là : 1+12= 13
tuổi ông là : 78:13.12=72 ( tuổi )
tuổi cháu là : 78 - 72=6 (tuổi )
Đ/S:ông 72 tuổi
cháu 6 tuổi
2023-11-05 09:23:26
balcony
2023-11-05 09:02:43
a) viii, xv,xxiv
b)0,3,6,9
2023-11-01 21:03:13
a,6:vi;24:xxiv;39:xxxix
b,U(36)>6={9;12;18;36}