If a constraint-based set is defined as 'the set of all x such that x is a natur

Practice Questions

Q1
If a constraint-based set is defined as 'the set of all x such that x is a natural number and x < 10', which of the following is a valid representation of this set?
  1. {1, 2, 3, 4, 5, 6, 7, 8, 9}
  2. {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
  3. {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
  4. {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}

Questions & Step-by-Step Solutions

If a constraint-based set is defined as 'the set of all x such that x is a natural number and x < 10', which of the following is a valid representation of this set?
  • Step 1: Understand what a natural number is. Natural numbers are the positive integers starting from 1 (1, 2, 3, ...).
  • Step 2: Identify the constraint given in the question, which is 'x < 10'. This means we are looking for natural numbers that are less than 10.
  • Step 3: List the natural numbers starting from 1 and stop before reaching 10. The numbers are 1, 2, 3, 4, 5, 6, 7, 8, and 9.
  • Step 4: Combine these numbers into a set format. The set of all natural numbers less than 10 is {1, 2, 3, 4, 5, 6, 7, 8, 9}.
  • Step 5: Verify that this set includes all natural numbers that meet the condition of being less than 10.
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