Bees can recognize numbers

In Australia, scientists have found that honey bees can distinguish between even and odd numbers. As part of the study, the experts divided the bees into several groups. One group was taught to associate even numbers with sweet water with sugar, and odd numbers with water with quinine, which made the liquid bitter. At the same time, another group was taught the opposite associations with water. Subsequently, the scientists showed the bees cards with even and odd numbers. In 80 percent of the cases, the insects correctly determined the number. When they were shown cards they had not previously used, their accuracy rates dropped but remained at 70 percent.