option price

Hi, I have had a quick search but not found the answer. When pricing options using the binomial method, are you supposed the discount future option pricing back to current node using relevant discount rates? I have seen an example where this is not done (the current value is just a weighted...

Hi- I am trying to understand the answer for this problem: The current price of a stock is $30. In each of two time steps, where each time step is three months, the stock may go up by 8% or down by 8%. For example, the stock might go up twice in a row to realize a price of $30*1.08*1.08 =...