hai so da cho co chu so hang trieu [a] giong nhau
vay chi can b > d thi ^ ---------- a bcd egh > ^------------ a dcb geh vi b khac d
hai so da cho co chu so hang trieu [a] giong nhau
vay chi can b > d thi ^ ---------- a bcd egh > ^------------ a dcb geh vi b khac d
tim gia tri lon nhat cua a+b-c . voi dieu kien a;b;c deu la so co 3 chu so
tim phan so nho nhat co dang a/48 thoa man dieu kien 1/6<a/48<1/3
co 3 nguoi ban tao
nguoi thu nhat co 10 qua
nguoi thu hai co 20 qua
nguoi thu ba co 30 qua
hoi lam the nao de 3 nguoi ban cung 1 gia ma tien thu ve bang nhau
dieu kien : 3 nguoi nay khong o gan nhau
khong cho ai
co bao nhieu nam cua the ki 21 thoa man dieu kien chu so hang nghin bang tong cac chu so con lai
biet 4 so tu nhien lien tiep thoa man dieu kien so lien tiep khac nhau 15 don vi va tong la 2170 tim so lon nhat
muon chia het cho so 45 ta can thoa man dieu kien gi?
CO BAO NHIEU NAM CUA THE KI XXI THOA MAN DIEU KIEN CHU SO O HANG NGHIN BANG TONG CAC CHU SO O CAC HANG CON LAI
cho a = x459y . hay thay x,y boi chu so thich hop de a chi cho 2,5,9 va deu du 1
Mot cong chua vuong quoc no noi tieng la thong minh .Khi ken chong, nang ra dieu kien :Trong thoi gian ba ngay,ai ra duoc cau hoi nang khong tra loi duoc thi nang se lay lam chong .Nhieu chang trai den thu tai va deu chiu thua truoc su hieu biet cua cong chua .
Cuoi ngay thu ba ,mot nha toan hoc tre tuoi den xin thu tai. Chang dat cau hoi cho cong chua:
-Xin cong chua hay cho biet , toi phai hoi cau gi de cong chua khong tra loi duoc?
Hay xet xem voi cau hoi nay nha toan hoc co ket duyen duoc voi cong chua hay khong?