## 0

**Zero** has no value when it stands by itself. When a zero is placed to the right of a number, it increases the value N-fold (where N, say 10, is the Base or Radix of the Number System.

## 10

**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).

## 20

**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).

Per Dr. Kyaw Tint] : Maybe because we have 10 fingers and 10 toes, altogether adding up to score.

## 60

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

## Powers of 2

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).

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