A rule for clinical trials used for determining the rate of adverse side effects when no such side effects present during the course of the trial
A religious tenet stating that whatever energy a person puts out into the world, be it positive or negative, will be returned to that person three times
If two ratios are equal, then the denominator of the second equals its numerator times the reciprocal of the first ratio: if \frac ab=\frac cd then d=\frac{bc}a
A rule which states that things which come in groups of three are inherently funnier or more effective than things which come in groups of other sizes
Ever mind the Rule of Three "Three times what thou givest returns to thee" "This lesson well, thou must learn" "Thee only gets what thou dost earn"
An accepted guideline that states a solution presented in pattern format is not truly a pattern unless at least three independent occurrences of that solution exist
A requirement that selection must be made from the highest three eligible candidates on the certificate who are available for the job to which they applied
method for calculating the numerical value of a variable dependent on three given terms