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.
How Long Does Nicotine Stay in Breastmilk/Urine/Blood? Nicotine can be cleared from the blood faster than any other bodily fluid. It generally leaves the bloodstream in one-to-three days.(14) Saliva can hold nicotine anywhere from 10 hours to four days. Urine can hold nicotine for three-to-four days.