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.
Note: It is known that Nicotine stays in your system for less than 24 hours after your final ingestion. However, its active metabolite âcotinineâ lingers for longer duration (over 3 days). Most symptoms will emerge once the drug (and its metabolites) have been fully cleared from your body.