Khan/khan-exercises — Issue #15329: Properties of numbers 2 - impossible problem
Author: KhanBugz
Created: 2012-03-04 00:59:17+00:00
State: open
Labels: firefox, lion, other

dude, how bout you tell me what number you can multiply 1987 to 1

[properties_of_numbers_2.html?seed=161&problem=multiplicative-inverse](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/properties_of_numbers_2.html?seed=161&problem=multiplicative-inverse&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/properties_of_numbers_2.html?seed=161&problem=multiplicative-inverse&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%221%5C%22%22%2C11%5D%2C%5B%22incorrect-activity%22%2C%22%5C%220%5C%22%22%2C7%5D%2C%5B%22incorrect-activity%22%2C%22%5C%221987%5C%22%22%2C9%5D%5D)

["1","1","0","1987"]

Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:10.0.2) Gecko/20100101 Firefox/10.0.2

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