Research by Marie Dacke has indicated that honeybees can count up to this number, and a theorem named for this number was proven by Kenneth Appel and Wolfgang Haken. The number of moons of Jupiter discovered by Galileo is equal to this number, and the chemical element with this atomic number is beryllium. For 10 points, name this number that is sha
Research by Marie Dacke has indicated that honeybees can count up to this number, and a theorem named for this number was proven by Kenneth Appel and Wolfgang Haken. The number of moons of Jupiter discovered by Galileo is equal to this number, and the chemical element with this atomic number is beryllium. For 10 points, name this number that is shared by the number of phenotypes in the ABO blood system, the number of mammalian heart chambers, and the number of sides on a trapezoid.
Research by Marie Dacke has indicated that honeybees can count up to this number, and a theorem named for this number was proven by Kenneth Appel and Wolfgang Haken.