The number must be divisible by both 3 and 5.
A number is divisible by 3 if the sum of the digits of a number is and 5 if the last digit is 0 or 5.
Ex: 2,552,745, 102,315
Non Ex: 28375, 19431
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Divisibility rules have been developed and refined by mathematicians over the centuries. It is difficult to attribute the invention of divisibility rules to a specific individual. However, some early rules can be traced back to ancient civilizations like the Egyptians, Babylonians, and Greeks. These rules were further expanded upon and formalized by various mathematicians throughout history.
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