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.
Nicotine can stay in a person's body anytime between 48 hours to 3 months. The duration of its stay depends on 3 factors -. The number of years a person has been using nicotine. The amount of nicotine intake. The type of test used to determine the presence of nicotine in the body.