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What are the elements of set?

  1. Dec 5, 2017 #1
    1. The problem statement, all variables and given/known data
    X is the set of all integers n that satisfy the inequality

    2 <= |n| <=5
    What are the elements of set X?
    2. Relevant equations

    Provided above.
    3. The attempt at a solution
    In my view X should have: 2, 3, 4, 5 elements. I cant understand how X have negative values. Some body please guide me.

  2. jcsd
  3. Dec 5, 2017 #2


    User Avatar
    Science Advisor

    Do you know that the vertical bars around |n| mean absolute value? How does that effect which integers n are in the set?
  4. Dec 5, 2017 #3


    Staff: Mentor

    That would be correct if your inequality were this one:
    2 <= n <= 5
    @phyzguy's question is relevant for your problem.
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