Practice question

[Seymore4Head]

On Sun, 05 Oct 2014 19:14:27 -0400, Ned Batchelder
<ned at nedbatchelder.com> wrote:

>On 10/5/14 7:02 PM, Seymore4Head wrote:
>> For the record, I don't want a hint.  I want the answer.
>> I see a practice question is similar to this.
>> 15 <= x < 30  And it wants a similar expression that is equivalent.
>> So the right answer is 15<= x or x <30
>
>No, "15 <= x < 30" is equivalent to "15 <= x and x < 30".
>
>> but one of the other answers is
>> not (15<= x and x <30)
>
>You are speaking ambiguously.  Which did you mean:
>a) one of the other answers isn't "15 <= x and x < 30", or:
>b) one of the other answers is "not (15 <= x and x < 30)" ?

Here is the exact question, I was trying to post something similar.  I
failed.

http://i.imgur.com/iUGh4xf.jpg