tim mot so chan co hai chu so , biet rang chu so hang chuc ga 4 lan chu so hang don vi ?
Tim mot so chan co nam chu so khac nhau biet rang chu so hang chuc nghin gap ba lan chu so hang don vi chu so hang nghin gap 5 lan chu so hang chuc va chu so hang tram gap 4 lan chu so hang chuc .
tim mot so chan co nam chu so khac nhau ,biet rang chu so hang chuc nghin gap 3 lan chu so hang don vi,chu so hang nghin gap 5 lan chu so hang chucva chu so hang tram gap 4 lan chu so hang chuc
mot so chan co 4 chu so biet rang hang tram va chu so hang chuc lap thanh mot so gap 3 lan chu so hang nghin va gsp 2 lan chu so hang don vi
Số đó là số 4126 bạn nhé ^-^
Mình thi rồi nên mình biết!!
tim mot so co ba chu so biet rang chu so hang tram gap 2 lan chu so hang chuc,chu so hang chuc gap 3 lan chu so hang don vi
tim mot so co hai chu so biet rang so do gap 7 lan tong cua no va chu so hang chuc hon chu so hang don vi la 4
Tim so co 3 chu so biet rang chu so hang tram gap 2 lan chu so hang don vi va chu so hang don vi gap 3 lan chu so hang chuc Tim so do ?
Bai nay hoi kho mot chu nha!
Tim so chan co ba chu so biet rang chu so hang tram gap hai lan chu so hang don vi va bang 1 phan 2 chu so hang chuc
tim mot so co 3 chu so biet rang neu doi chu so hang tram va chu so hang don vi cho nhau so moi lon hon so cu 792 don vi chu so hang don vi gap 3 lan chu so hang chuc
Gọi số đó là abc
Theo bài ra ta có cba-abc=792
(100c+10b+a)-(100a+10b+c)=792
100c+10b+a-100a-10b-c=792
99c-99a=792
99(c-a)=792
c-a=8
mà c:a=3
3a-a=8
2a=8
a=4; c=12(vô lý)
Không có abc
Tim mot so co 2 chu so,biet rang chu so hang don vi gap 3 lan chu so hang chuc va neu ta doi cho hai chu so cho nhau thi duoc so moi lon hon so cu la 54 don vi