# hex ppt - We can write ordinary counting numbers in many...

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We can write ordinary counting numbers in many different ways. We usually use base ten, but we have also learned base two, which is known as the binary system of writing numbers. We can use any whole number greater than 1 as a base. For example, base three, or the ternary system, writes numbers using the three symbols 0, 1, 2.

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§ Example: write fifteen in base 3. For this, we use powers of 3: ____ ____ ____ nines threes ones To obtain fifteen, we need one nine and two threes: we write fifteen = 120ternary
§ What number does 221ternary represent? This symbol means: 2x nine + 2x three + 1x one = twenty-five. How many “basic symbols” do we use in ternary notation? Three: 0, 1, 2.

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§ What is 10ternary ? Answer: three How many basic symbols would we use to write in base seven? Answer: seven. The base-seven basic symbols are 0, 1, 2, 3, 4, 5, 6. Note that the symbol 7 is NOT used in base seven.
In addition to base ten and base two, one frequently encounters base sixteen, also known as hexadecimal (sometimes written

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hex ppt - We can write ordinary counting numbers in many...

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