alleryWhich two arithmetic operations always keep us in natural numbers?
AAddition and multiplication
BAddition and division
CSubtraction and division
DSubtraction and multiplication
Answer & Solution
Correct answer: A. Addition and multiplication
1. Addition and multiplication are the two basic operations on natural numbers.
2. Subtraction and division only sometimes give natural-number results.
3. For example, 3 minus 5 is not a natural number.
_Source: Wikipedia, Natural number, Lead section_
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