Hello,

I have this information:

P(a, 1) = 0,4

P(a, 2) = 0,1

P(a, 3) = 0,05

P(a, 4) = 0,1

P(b, 1) = 0,05

P(b, 2) = 0,1

P(b, 3) = 0,3

P(b, 4) = 0,1

We have X_{1}(x, y) = x and X_{2}(x, y) = y so P(X_{2}= 1) = P({(a, 1); (b, 1)})

How can I Calculate H(X), H(Y) and H(Y|X)?