Update examples and more information (#23437)

guide/english/mathematics/example-all-the-ways-you-can-flip-a-coin/index.md

@@ -3,13 +3,20 @@ title: Example All the Ways You Can Flip a Coin
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 ## Example All the Ways You Can Flip a Coin
 
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+In the experiment of flipping a coin, the mutually exclusive outcomes are the coin landing either heads up or tails up.
 
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+When we flip a coin a very large number of times, we find that we get half heads, and half tails. We conclude that the probability to flip a head is 1/2, and the probability to flip a tail is 1/2.
+
+Consider the experiment of flipping of **n** coins where we can enumerate all possible outcomes as follows, where H indicates a head, and T a tail:
+
+* **n = 1** | H  T
+* **n = 2** | HH HT  TH  TT
+* **n = 3** | HHH THH HTH HHT TTH THT HTT TTT
+* **n = 4** | HHHH  THHH  HHHT  THHT  HHTH  THTH  HHTT  THTT  HTHH  TTHH  HTHT  TTHT  HTTH  TTTH  HTTT  TTTT
+
+The formula for all possible outcomes of flipping n coins is 2 to the nth power.
 
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+- [Theory of Probability](http://www.pas.rochester.edu/~stte/phy104-F00/notes-2.html)