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With the word hundred or its numeri- cal representative we know that we have one repeated hundred times. Were this help to fail we could not speak of hundred base calculations upon it or even form it It is however well said that we do not succeed in forming it except by tens by repeating the calculation ten ten times. Let it not therefore be thought that the idea of the number is the idea of the sign for evidently the same idea of ten corresponds to the word ten whether written spoken or numerically represented by the figures although these three signs are very different. Every language has word of its own to express ten and all people have the same idea of it. This last remark creates difficulty as to what the idea of ten consists in. prev next |