Ta có: 1ab + 36 = ab1
=> 100 + 10a + b + 36 = 100a + 10b + 1
=> 136 + 10a + b = 100a + 10b + 1
=> 135 = 90a + 9b
=> 135 = 9 ( 10a + b )
=> 135 : 9 = ab
=> ab = 15
Vậy số cần tìm là 15
tim so co 2 chu so dang 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 CHIA CUA 1 PHEP CHIA , BIET RANG SO BI CHIA BANG 36 , SO DU BANG 15 . SO CHIA LA SO TU NHIEN CO 2 CHU SO . TIM SO CHIA ? MINH CAN NGAY MAI PHAI CO NEN AI TRA LOI DUOC MINH CHO 1 LIKE
Tim so co 3 chu so biet rang neu viet them vao chu so 1 vao truoc so do thi duoc so moi gap 9 lan so ban dau .So can tim la
tim so co co hai chu so, biet rang khi chia so do cho chu so hang don vi ta duoc thuong la chu so hang don vi va so du la chu hang chuc
tim cac chu so a,b biet so tu nhien ab*a=1ab (ab la so tu nhien)
tim so chia cua mot phep chia , biet rang : so bi chia 410, so du bang 19
a) tim mot so co hai chu so va neu lay so do chia cho chu so hang don vi thi duoc thuong la 8 va du 7
b) tong cua hai so bang 196 . tim hai so do
c)tim so co 3 chu so , biet rang neu viet them mot chu so 3 vao ben phai so do thi no tang them 2217 don vi
Tim 1 so co hai chu so biet rang neu viet chu so 1 vao ben trai va ben phai thi duoc 1 so gap 87 lan so can tim
