Khan/khan-exercises — Issue #8821: Properties of numbers 1 - im frustrated because i keep getting it wrong its too hard
Author: KhanBugz
Created: 2011-12-16 16:15:01+00:00
State: open
Labels: hard, ie8, xp

[properties_of_numbers_1.html?seed=63&problem=associative-show-left](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/properties_of_numbers_1.html?seed=63&problem=associative-show-left&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/properties_of_numbers_1.html?seed=63&problem=associative-show-left&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%2267%5C%22%22%2C6%5D%2C%5B%22hint-activity%22%2C%220%22%2C0%5D%2C%5B%22hint-activity%22%2C%220%22%2C0%5D%2C%5B%22hint-activity%22%2C%220%22%2C0%5D%2C%5B%22hint-activity%22%2C%220%22%2C0%5D%2C%5B%22hint-activity%22%2C%220%22%2C0%5D%2C%5B%22hint-activity%22%2C%220%22%2C0%5D%5D)

["67","67"]

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; GTB7.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.2; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)

MathJax is loaded, ready, queue length: 0