Roster method: A={1,2,3,4,5,6,7,8}
Rule mathod: A={ ✖️.✖️ is a 1-8}
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The positive integers less than or equal to 8 are 1, 2, 3, 4, 5, 6, 7, and 8. These numbers are whole numbers greater than zero and do not include any negative numbers or fractions. In set notation, this collection of numbers can be represented as {1, 2, 3, 4, 5, 6, 7, 8}.
All positive integers less than or equal to 39 are whole numbers less than 40.
There are 20.
There are no positive integers less than any negative ones.
Two of them. Two of them. Two of them. Two of them.
3, 2, 1