File:09-240 Classnotes for Tuesday September 15 2009 page 3.jpg

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NOTE: 2+2 in the addition chart should read 4 and 2+3 should read 5; $2+2\equiv 4(mod7)$ and $2+3\equiv 5(mod7)$

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	19:24, 15 September 2009		783 × 1,029 (364 KB)	Yangjiay (talk \| contribs)
	19:24, 15 September 2009		783 × 1,029 (364 KB)	Yangjiay (talk \| contribs)

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