Lam the nao de chia 7 qua cam ch0 12 nguoi ( khong cat qua cam ra 12 phan 24 Phan,36phan

Co 9 qua cam chia cho 12 nguoi . Lam cach nao ma khong cat bat ky qua nao thanh 12 phan bang nhau?

lam the nao de 4 chia 3 bang 2

Co 100 dong xu dat lan lon mat xap va ngua tren ban, co 10 dong xap va 90 dong ngua. Ban khong biet dong nao xap hay ngua, khong dc so vao dong xu, khong dc nhin. Lam the nao de chia so dong xu ay thanh 2 phan ma phan nao cung co so mat xap nhu nhau?

Lam the nao de chia doi  16 lit dau dung trong mot thung bang 2 chiec can 7 lit va 9 lit

Mai dung mot can dia co cau tao tuong tu nhu can Robecvan va mot qua can loai 4kg de chia 10kg gao thanh 10 tui co khoi luong bang nhau.Hoi Mai phai lam nhu the nao?

Thay * bang cac chu so nao de duoc so 25*3 chia het cho 3 va ko chia het cho 9

Thay * bang cac chu so nao de duoc so 79* chia het cho ca 3 va 5 

Thay * bang cac chu so nao de duoc so 12* chia het cho ca 3 va 5

Ai lam nhanh minh se tick cho nha .

viet phan so 3/5 duoi dang phan so thap phan co mau so bang 10 va co mau so bang 100.

viet hai phan so thap phan moi tim duoc thanh hai so thap phan.

co the viet 3/5 thanh nhung so thap phan nao ?

mot thanh kim loai bang vang bi bam mot it bot sat tren be mat .co the dung dd nao de lam sach thanh kim loai bang vang ?

a ) cuCl2

b) Hcl

c) AlCl3

d) Naoh