co tat ca 1800 vien gach nhu nhau duoc xep thanh hai chong gach . chong thu nhat co the tich bang 2/3 the tich chong thu hai. hoi moi chong gach co the tich bao nhieu met khoi

hai chong gach  co  tat ca  1000 vien gach nhu nhau . chong gach thu nhat co the  tich =2/3 chong gach thu 2 .hoi moi chong gach co bao nhieu vien 

co ba chong sach toan am nhac van moi chong chi gom mot loai sach moi cuon toan 15mm moi cuon am nhac day 6mm moi cuon van day 8mm nuoi ta xep sao cho 3 chong sach bang nhau tinh chie caonho nhat cua 3 chong sach

co 3 chong sch : toan ,  am nhac , van . moi chong 1 gom co 1 loai sach . moi cuan toan 15 mm,moi cuan am nhac day 6 mm moi cuan van day 8 mm.nguoi ta xep sao cho 3 chong sach bang nhau . tinh chieu cao nho ngat cua 3 chong sach do

Chien thang lon chong tong va 3 lan khang chien chong mong nguyen

Chơi trò chơi: Quay chong chóng.

Khi nào chong chóng quay nhanh, quay chậm hoặc không quay?

bai tap van dung boi va uoc 

mot thu vien co khoang tu 715 den 1000 quyen sach, ney xep thanh chong, moi chong 10 quyen 

thi vua du hoac xep moi chong 12 quyen thi du 2 quyen , hoac neu xep moi chong 18 quyen thi du 8 quyen 

Tim so sach thu vien