tich cua 2 so A va B la mot so co hai chu so chia het cho 2 va 3 va chia 5 du 1,chu so hang chuc nho hon chu so hang don vi .khi cong hai don vi vao A va 4 don vi vao B thi ta co tich moi la 98. hay tim A va B.

tim so co 3 chu so. Biet trung binh cong cua 3 chu so la 2 va chu so hang tram bang tong chu so hang chuc va hang don vi. Tim 3 chu so do ?

chữ số hàng trăm gap 2 lan hang don vi , chu so hang chuc gap 3 chu so hang tram . biet chu so hang don vi la 3 . tim trung binh cong cua so vua tim duoc voi so 126

Tim so co 3 chu so biet hieu cua chu so hang tram va hang don vi bang o,hieu cua chu so hang chuc va don vi bang 8

TIM MOT SO CO 3 CHU SO IET TRUNG BINH CONG 3 CHU SO CUA SO DO LA 6 BIET CHU SO HANG TRAM GAP 3 CHU SO HANG CHUC CHU SO HANG CHUC HON CHU SO HANG DON VI LA 3

1,

Cho a=2^13.5^7 . Tim so cac chu so cua so a

2 , 

Cho b=3^2009.7^2010.13^2011 . Tim chu so hang don vi cua b

A=17^2008-11^2008-3^2008.Tim chu so hang don vi cua A

tim mot so co 3 chu so biet trung binh cong cac chu so cua so do la 6 biet hang tram gap 3 hang chuc ,hang chuc kem 3 hang don vi

1 ,Tim so co 4 chu so biet chu so hang tram gap doi chu so hang chuc , chu so hang chua gap 3 lan chu so hang don vi 

2, Tim 1 so co 2 chu so , biet neu so do chia cho chu so hang don vi cua no thi dc thuong = 6 va du 5

3,Tim so co 4 chu so biet neu xoa chu so hang chuc thi so do giam di 1188 don vi

4, Tim so co 3 chu so neu so do cong voi tong cac chu so cua no thi = 555

            Giai Han Ra Nhe !

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