#Cau1:
A = [0,1,2,3,4,5];
Space = 5*4 + 5*4*4;
print("Cau 1:")
print("\t i. Co %d ba chu so duoc tao thanh"%Space);
Space2 = 1*5*4 + 2*4*4;
print("\t ii. Co %d so tu nhien co 3 chu so khac nhau chia het cho 2."%Space2);
Space3 = (1/6)**3;
print("\t iii. Xac suat lay duoc so 333 la: ",Space3);
    #Cau2:
svGiaiTich = 24;
svDAISOTUYENTinh = 26;
svHAINOIDUNG = 15;
Tongsosv = svDAISOTUYENTinh + svGiaiTich - svHAINOIDUNG;
print("Cau 2:")
print("\t So sinh vien hoc to hoc thuc hanh la: ",Tongsosv);
    #Cau3:
ChonMonAn = 3*2*1/2;
print("Cau 3: ")
print("\t Tong so cach ma khach hang co the chon mon an la:  ",ChonMonAn);
    #Cau4:
Space4 = (10/100)*(9/99);
print("Cau 4: ")
print("\t i. Rut duoc 2 the lap nen mot so co 2 chu so la:  ",Space4);
Space41 = (20/100)*(99/99);
print("\t ii. Rut duoc 2 the lap nen mot so chia het cho 5 la ",Space41);
def giaithua(n):
    s = 1;
    for i in range(1,n+1):
        s = s * i;
    return s

def C(n,k):
    s = (giaithua(n))/(giaithua(n-k)*giaithua(k));
    return s
    #Cau5:
Space5 = C(15,3);
PCau5 = C(6,3)*C(9,3)/(Space5**2) + C(9,3)*C(6,3)/(Space5**2) + C(9,2)*C(6,1)*C(7,3)/(Space5**2)+C(9,1)*C(6,2)*C(8,3)/(Space5**2)
print("Cau 5: ")
print("\t Xac suat de ca 3 bong lay duoc lan 2 la bong moi la: ",PCau5);
    #Cau6:
bido = 8;
bitrang = 5;
Cau6i = (8*7)/(13*12)
print("Cau 6: ")
print("\t i: Xac suat lay duoc 2 vien bi do la: ",Cau6i);
Cau6ii = 2*(8*5)/(13*12)
print("\t ii: Xac suat lay duoc 2 vien bi khac mau la: ",Cau6ii);
Cau6iii = (8*5)/(13*12) + (5*4)/(13*12)
print("\t iii: Xac suat lay duoc vien bi thu 2 la mau trang la: ",Cau6iii);
    #Cau7:
SpA = 20.7 / 100
SpB = 50 / 100
SpAinB = 36.5 / 100
Cau7i = SpB * SpAinB
print("Cau 7: ")
print("\t i. Su dung ca 2 san pham A va B la: ",Cau7i)
Cau7ii = SpB * (1 - SpAinB)
print("\t ii. Su dung San pham B nhung khong su dung San pham A: ",Cau7ii)