023

An average ear of corn has an even number of rows, usually 16.

022

40 Below Is the Only Temperature That Is the Same in Both Fahrenheit and Celsius.

021

If you multiply a number by 9 and add all the digits of the new number together, the sum will always add up to 9. So, for example: 8 x 9 = 72, 7 + 2 = 9

020

A baseball diamond is a perfect rhombus.

019

The symbol for division (÷) is called an obelus.