An Irrational Number is a real number that cannot be written as a simple fraction.
1 The nicotine will totally be gone within 1-3 days after your last using tobacco.  In urine: The urine test normally can detect nicotine level within 3-4 days after the last time you use tobacco. However, if you often smoke or you are passive smokers, nicotine can stay for a period of 15 to 20 days in urine.
To make your system free of nicotine both cotinine and nicotine remnants have to be fully expelled from the body. Cotinine stays in your system much longer than alcohol does. After you have quit smoking or consumption of tobacco, the cotinine substance can remain in your body up to 3 months or more. How long does nicotine stay in your system depend on various factors such as: 1  Volume of nicotine got into your system, 2  Frequency and time-period of tobacco usage, 3  Diet, lifestyle habits, and health condition of the person.