Given P(A)=0.4P(A) = 0.4P(A)=0.4, P(B)=0.5P(B) = 0.5P(B)=0.5, and P(A∣B)=0.2P(A|B) = 0.2P(A∣B)=0.2, what is P(Ac∣Bc)P(A^c | B^c)P(Ac∣Bc)?
12\frac{1}{2}21
23\frac{2}{3}32
710\frac{7}{10}107
35\frac{3}{5}53