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Number enclosed by 2 vertical bars

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Intern
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Joined: 15 Oct 2017
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Number enclosed by 2 vertical bars [#permalink]

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New post 26 Nov 2017, 23:05
Hello everyone,

what does a number enclosed by 2 vertical bars means?

thank you!
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Re: Number enclosed by 2 vertical bars [#permalink]

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New post 26 Nov 2017, 23:15
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thegame12 wrote:
Hello everyone,

what does a number enclosed by 2 vertical bars means?

thank you!


Those are Absolute Value (modulus) Symbols . The absolute value (or modulus) \(|x|\) of a real number x is x's numerical value without regard to its sign.

For example, \(|3| = 3\); \(|-12| = 12\); \(|-1.3|=1.3\); \(|0|=0\).

Check for more below:

10. Absolute Value



For more check Ultimate GMAT Quantitative Megathread



Hope it helps.
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Re: Number enclosed by 2 vertical bars [#permalink]

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New post 26 Nov 2017, 23:18
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thegame12 wrote:
Hello everyone,

what does a number enclosed by 2 vertical bars means?

thank you!


The symbol is called Modulus and it gives the absolute value of the number inside the symbol (2 vertical bars).

For eg |-2| = 2 and |2| = 2.

You can find more about this concept here : https://gmatclub.com/forum/math-absolut ... 86462.html

Hope this helps!!!
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Re: Number enclosed by 2 vertical bars [#permalink]

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New post 26 Nov 2017, 23:30
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The symbol is called modulus and it gives the absolute value of the number. For eg |-2| = 2 and |2| = 2.
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Re: Number enclosed by 2 vertical bars [#permalink]

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New post 26 Nov 2017, 23:34
Thank you guys, so why using |-2| instead of 2 directly? This is kind of useless
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Re: Number enclosed by 2 vertical bars [#permalink]

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New post 26 Nov 2017, 23:35
Re: Number enclosed by 2 vertical bars   [#permalink] 26 Nov 2017, 23:35
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