Визначається кількістю символів, в яких комбінації відрізняються одна від одної, і позначається через d:

  A 13 year old boy comes to the psychiatric hospital with his father after he found him smoking cigarettes. In the interview, the father said his son recently frequently comes home in a euphoric mood and seems high and this was after he made some new friends. A urine toxicology screening is positive for cannabinoids. Which is the active substance of cannabinoids?

Fie imaginea:

Ce efect trebuie de aplicat  pentru a obține urmatoarea imagine?