Khan/khan-exercises — Issue #12983: Compound inequalities - Wrong answer in compound inequalities
Author: KhanBugz
Created: 2012-02-03 10:15:47+00:00
State: open
Labels: firefox, snowleo, wrong-or-unclear

The problem simplified is z≥3 and z≥1. The answer should be z≥1, not z≥3 since everything between 1 and 3 isn't included in z≥3. Thank you

[compound_inequalities.html?seed=113&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/compound_inequalities.html?seed=113&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/compound_inequalities.html?seed=113&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%22%3Ccode%20style%3D%5C%5C%5C%22display%3A%20none%3B%5C%5C%5C%22%3Ez%E2%89%A53%3C%2Fcode%3E%20and%20%3Ccode%20style%3D%5C%5C%5C%22display%3A%20none%3B%5C%5C%5C%22%3Ez%E2%89%A51%3C%2Fcode%3E%5C%22%22%2C43%5D%2C%5B%22hint-activity%22%2C%220%22%2C1%5D%2C%5B%22hint-activity%22%2C%220%22%2C1%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%5D)

["z≥3 and z≥1"]

Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; sv-SE; rv:1.9.2.6) Gecko/20100625 Firefox/3.6.6

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