Các câu hỏi tương tự
Cho 31 so nguyen trong do co 5 so bat ki co tong la so nguyen duong.Hay chung to rang tong cua 31 so do deu la so nguyen duong
chung minh rang trong 27 stn bat ki tim duoc it nhat 6 so khi chia cho 5 co cung so du nguyen ly DiRichLe
co ton tai khong 30 so nguyen viet thanh hang ngang ma tong 5 so lien tiep bat ki la so am ,tong 7 so nguyen lien tiep bat ki duong
a. cho 2017so nguyen trong do 7 so bat ki luon co tong am. hoi tong cua2017 so do la am hay duong?
b. cho 2017 so nguyen trong do 7 so bat ki luon co tich am. hoi tich cua 2017 so do la am hay duong? moi so nguyen do la am hay duong
cho 215 so nguyen viet tren mot vong tron . Trong do tich 2 so nguyen lien nhau bat ki luon bang 144 . Tim cac so do
cho 215 so nguyen viettren mt vong tron . Trong do tich cua 2 so nguyen lien nhau bat ki luon bang 144 . Tim cac so do
CMR trong 19 so tu nhien bat ki ta luon tim duoc 1 so co tong cac chu so chia het cho 10
cho 26 so nguyen,trong do tong cua 5 so bat ki la mot so nguyen duong.chung to rang tong cua 26 so nguyen da ch la mot so nguyen duong.
viet mot so A bat ki co ba chu so viet tiep ba chu so do 1 lan nua duoc so B co sau chu so chia so B cho 7 roi chia thuong tim duoc cho 11 sau do lai chia thuong tim duoc cho 13 ket qua duoc so A hay giai thich vi sao