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 Mar9 asked Winning a restricted game of Nim? Mar8 accepted Determining Grundy Numbers for an inverted takeaway game Mar8 asked Determining Grundy Numbers for an inverted takeaway game Mar8 awarded Teacher Mar8 revised Using Poisson Distribution added 216 characters in body Mar8 answered Using Poisson Distribution Mar4 comment Conditional expectation of number of dice rolls Now that I'm looking at it again, I'm having a harder time understanding where $EX$ came from than where $\mu_k$ came from. The recursive nature if $EX$ is hard to grapple Mar4 comment Conditional expectation of number of dice rolls Can you elaborate more on how you came up with that expression for $\mu_k$? It does work, but I don't really understand where you got it from Mar3 awarded Critic Mar2 comment Conditional expectation of number of dice rolls And I'm using Introduction to Probability Models by Sheldon Ross Mar2 revised Conditional expectation of number of dice rolls added 18 characters in body Mar2 comment Conditional expectation of number of dice rolls Whoops, I'm sorry! I typed too fast...X and Y are random variables, not events. I'll fix that right now. Mar2 comment Conditional expectation of number of dice rolls Ok, so then I'm just dealing with $\frac{P(X=x)}{P(Y=1)}$? But then $\sum_{x=1}^\infty x\frac{(5/6)^{x-1}(1/6)}{(1/6)} = \sum_{x=1}^\infty x(5/6)^{x-1} = 36$, which is not $7$ Mar2 asked Conditional expectation of number of dice rolls Feb15 accepted Finding the max flow of an undirected graph with Ford-Fulkerson Feb15 awarded Yearling Feb15 revised Finding the max flow of an undirected graph with Ford-Fulkerson edited body Feb15 asked Finding the max flow of an undirected graph with Ford-Fulkerson Jan31 awarded Popular Question Jan17 comment differential area Thank you, crystal clear!