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In a unary numerical system, there is only one digit: 1. Any number larger than one is represented by the symbol 1 repeated the appropriate number of times. For example, 7 (decimal) = 1111111 (unary). It is the simplest numerical system to learn but becomes quite unmanageable. Using a 10 point font the biggest number that you could write on a normal page is approx 3584: the exact value depends on the margins. At that rate you would need approximately 5 billion (yes, BILLION) pages to write out the value of the US debt (in June 2014)! And the cost of all that paper will send it up some more!

By contrast, a positional system uses a base band b different digits. The place value of the digit immediately to the left of the "decimal" point is b0 = 1, the place value of the digit to its left is b1, then to its left is b2 and so on.

In the decimal system, the US debt is approx USD 17530000000000. It took only(!) 14 digits to write it out. In the hexadecimal (base 16) system, the same number can be represented by USD 414DE9280, requiring only 9 digits.

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Q: What is the difference between a positional number system and unary numerical system?
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What is difference between positional and non-positional number system?

In non-positional number system, each symbol represents the same value regardless of its position.In positional number system ,each symbol represents different value depending on the position they occupy in a number.In non positional number system,its very difficult to perform arithmetic with such a number system.In positional number systems were developed.

What is the difference between an expression and a numerical expression?

it has to have an x number in it.

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The use of the zero symbol in numeracy is essential for positional place value purposes as for example to tell the difference between 23 and 203

What is the major difference between the hieratic numerals and your number system?

hieratic numerals did not form a positional system so the particular numerals could be written in any order.

Write one numerical expression and one algebraic expression then explain the difference between a numerical and algebraic expression is?

Numerical Expression: 1.) 20+2-8 ( Or any other number with two symbols on math ) Algebraic Expression: 2.) h x 2 ( Or any other number using only one symbol an a letter ) The difference between a numerical and algebraic expressions is that numerical expressions use only numbers, but algebraic expressions use letters as variables to represent numbers.

What is the difference between facts and statistics?

A statistic is a number or a fraction or any form of numerical data. A fact is an accepted theory or idea that can be proven.

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Why there is no number 0 in roman numbers?

The number system that we use today is the Hindu-Arabic numeral system and a 0 number is essential for positional place value purposes as for example it shows us that there is a difference between 27 and 207 but a 0 number is not needed in the Roman numeral system because the positional place value of its numerals are self evident as for example XXVII is 27 and CCVII is 207

Definition of Non positional number systems?

In the non positional number system, the value of the number does not depend upon the position of "digits" used to represent the number. Unlike the positional number system, in non positional system every number, as a whole, is represented as a combination of certain specific symbols. Therefore, according to me, there is no such a notion of "digits" in the non positional system. The classic example of non positional number system is the Roman number system in which the numbers are represented by certain specific symbols: I for 1 II for 2 X for 10 XX for 20 etc.

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Their are two types of number systems. 1. Non positional number systems 2. Positional number systems.

What are positional muber system?

I think you meant positional number system or Positional Notation. In computer science when we talk about positional notation where talking about the binary(base 2) and hexadecimal(base 16) system. So for the most part a positional number system is a counting system. We for example use a base 10 counting system.

What is the difference between a categorical variable and numerical variable?

Basically categorical variable yield data in the categories e.g sex (male, female), modes of transport (Bus, railway, etc) and numerical variables yield data in numerical form e.g. age (0-100), number of accident on a certain highway (0,1,2,..).