Most visitors to restaurants arrive in even-numbered groups: a table for two, table for four. Most appetizer nibbles at restaurants arrive in odd numbers: five fritters, nine slices of crudo, three ...
Any number that can be divided by \({2}\) is called an even number. Some examples of even numbers are \({2}\), \({4}\), \({6}\), \({8}\), \({10}\), \({22}\), \({144 ...