tim mot so tu nhien co 2 chu so , biet rang neu viet them mot chu so 2 ao ben phai va mot chu so 2 vao ben ai cua no thi so ay tang gap 36 lan
tim mot so tu nhien co 2 chu so biet rang neu viet them chu so 1 vao ben trai va ben phai so do thi duoc so co 4 chu so,lon gap 32 lan so da cho
tim mot so tu nhien co 2 chu so biet rang neu viet vao ben trai so do mot chu so 6 thi duoc so moi gap 41 lan so phai tim
tim mot so tu nhien co hai chu so biet rang neu viet them mot chu so 5 vao ben trai so do thi duoc so moi lon hon gap 26 lan so ban dau
Mot so tu nhien co hai chu so biet rang neu vieu viet them mot chu so 5 vao ben trai cua chu so do thi duoc so gap 26 la so ban dau
mot so tru nhien co bon chu so biet rang neu viet them so 2 vao ben trai viet them so 8 vao ben phai cua so do thi duoc mot so moi co sau chu so so moi nay chia cho so cu duoc thuong la 44 va du 4066 hay tinm so do
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
a) tong cua 2 so le lien tiep la 196. Tim hai so do
b) tim so co ba 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