For archive (Updated on February 17, 2019)
Zero has no value when it stands by itself. When a zero is placed to the right of a number, it increases the value ten-fold.
Ten stands for the number of fingers on our hands. It is used as the Base of the Decimal Number System. 10/10 (Ten out of Ten) is a perfect score in some contests (e.g. gymnastics, diving).
Twenty is known as a “Score”. Abraham Lincoln’s famous Gettysburg Address starts with “Four scores and seven years ago”. In French and Pali, the number 80 is expressed as four 20s (instead of eight tens). A card name is known as Vingt-e-un (Twenty One).
Sixty has many factors : 2, 3, 4, 5, 6, 10, 12, 15, 20, 30 …
It is used as a Base for Time and Angles.
e.g 1 minute = 60 seconds
1 hour = 60 minutes
Two is used as a Base for the Binary Number System.
Digital computers extensively use the system.
Four, Eight and Sixteen are used as Bases in Computer Science and Applications.
Dr. Kyaw Tint added :
Maybe because we have 10 fingers and 10 toes, altogether adding up to score.