On January 1, 2005 the bar codes put on retail products were changed so that they now represent 13 digits ins?

On January 1, 2005 the bar codes put on retail products were changed so that they now represent 13 digits ins?
On January 1, 2005 the bar codes put on retail products were changed so that they now represent 13 digits instead of 12. How many different products can now be identified with the new bar codes?

Best answer:

Assuming each digit is 0-9 and all possible bar codes are usable, 10^13 or 10 trillion.

Tags: 2005, changed, Codes, digits, January, products, represent, retail, they, Were

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