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Questions and Answers
What is the multiplicative identity for any number?
What is the multiplicative identity for any number?
- -1
- 2
- 0
- 1 (correct)
What does the additive absorption element do to a number?
What does the additive absorption element do to a number?
- Leaves the number unchanged (correct)
- Doubles the number
- Increases the number by 1
- Decreases the number by 1
What is the symbol for the number 1?
What is the symbol for the number 1?
- \
- Û± (correct)
- -
- /
In Roman numerals, what letter represents the number 1?
In Roman numerals, what letter represents the number 1?
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What does the number 1 often symbolize in many cultures?
What does the number 1 often symbolize in many cultures?
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Study Notes
Number 1
- The number 1 is a numerical value that represents a single unit or quantity.
- It is the first positive integer and the multiplicative identity.
- In mathematics, 1 is a fundamental number used as a placeholder, a scaling factor, and a reference point for ratios and proportions.
Properties of 1
- Multiplicative identity: 1 is the identity element for multiplication, meaning that any number multiplied by 1 remains unchanged (e.g., 5 × 1 = 5).
- Additive absorption: 1 is the additive absorption element, meaning that any number added to 1 results in the original number (e.g., 5 + 1 - 1 = 5).
Symbolism and Representation
- The symbol for the number 1 is a single stroke or vertical line: Û±.
- In Roman numerals, the number 1 is represented by the letter I.
- In many cultures, the number 1 is considered a symbol of unity, individuality, and beginnings.
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