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Show that : C1 + C2 + C3 + …. + C7 = 127...

Show that : `C_1 + C_2 + C_3 + …. + C_7 = 127`

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Show that C_1 + C_2 + C_3 +...+ C_6 = 63

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Show that C_0 + C_2 + C_4 + C_6 + C_8 = C_1 + C_3 + C_5 + C_7 = 128

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