Show that a positive integer is divisible by 11 if and only if the difference of the sum of its decimal digits in even-numbered positions and the sum of its decimal digits in odd-numbered positions is divisible by 11.

Notes for History – Colonial Latin America September 16, 2016 – week 3 LECTURE – IMPERIAL ADMINISTRATION The 1 Seaborne empires: Existed because of advances in technology & were connected by ships over vast oceans o They were slow, dangerous and unreliable though People, goods and...