Question: 1 . Let C be a binary code of length 8 such that every code word has weight 4 and any two distinct codewords x

1. Let C be a binary code of length 8such that every code word has weight 4 and any two distinct
codewords x and y has d(x,y)=4. Show that |C|<7.Does there exist such a code with |C|=7?

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