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Typo (P, Q, and *R*)

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1 parent b413b99 commit 80484f270e041124c2bb2635647de5b2aeabde2b @kevinclark committed Apr 26, 2012
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  1. +1 −1 README.md
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2 README.md
@@ -143,7 +143,7 @@ The key here is the function `put_char`. This prints a letter, or
5| | | |R| |
This is a five-by-five grid; I've marked three points: `P`, `Q`, and
-`Q`. `P` is two columns over and four rows down; we say that it is at
+`R`. `P` is two columns over and four rows down; we say that it is at
position `(2, 4)`. `Q` is 5 columns over and 2 rows down; we say its
position is `(5, 2)`. What position is `R` at?

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