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tim so co 2 chu so dang ab biet rang 1ab + 36 =ab1.So can tim la
co hai chu so ab, biet rang 1ab+36=ab1 so can tim la
tim so co hai chu so AB biet 1ab =36 = ab1
6. tim a,b,c thoa man
a, 481abc=1481.abc
b, 1ab+36=ab1
7. tim so co 2 chu so , biet rang neu viet chu so 0 xen giua hai chu so do thi duopc so co 3 chu so gap 9 lan so co 2 chu so ban dau??
tim so co 3 chu so abc biet 1abc chia cho abc du 3 tim abc
tim abc biet abc=(bca+cab):2 biet a b c khac nhau va khac 0
tim chu so a,b biet ab + ba chia het cho 3 va 4tim chu so a,b,c biet abc chia het cho 5 va 9,a + b = 2c
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tim so tu nhien abc biet 18abc chia het cho 3; 5; 25
tim ba so tu nhien nho nhat co ba chu so khac nhau abc .biet rang 3 .abc=ddd
tim abc