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Properties of Zero

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Joined: 31 Oct 2010
Posts: 489
Concentration: Strategy, Operations
GMAT 1: 710 Q48 V40
GMAT 2: 740 Q49 V42
Properties of Zero  [#permalink]

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New post 12 May 2011, 09:34
Hi guys,
Many a times, GMAT tests the properties of the number zero. So I think it'll be beneficial for everyone to memorize those properties. So lets put it all on one place. Let me start by putting down the properties I remember:

1. 0 is neither positive nor negative.
2. 0 is an even integer

Based on the above 2 properties, a trap DS question may be framed as below:
Q: What is the value of non negative integer n?
1. n is even
2. n is less than 4

The statements might lead one to think that n is "2" but thats not correct. n can be zero also. "non negative" doesn't necessarily mean that the number is positive. I've fallen to this trap enough number of times to by heart this! So, Always check for 0. In the above question, the answer will be (E)

3. 0!= 1. Don't ask me why, just memorize it!
4. 0/0 is not allowed on the GMAT
5. Any number raised to the power 0, will yield the result 1. n^0=1
6. 0^n=0
7. 0^0=1 (however, GMAT doesn't test this property)

Please add any other properties that I missed..

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Re: Properties of Zero  [#permalink]

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New post 13 May 2011, 06:58
good work man.Keep it up.

+1 to you.
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Re: Properties of Zero  [#permalink]

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New post 03 Aug 2015, 05:49
gmatpapa -

Excellent post. One more property of Zero that I would point out - 0 is multiple of every integer.

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Re: Properties of Zero  [#permalink]

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New post 24 Jan 2019, 07:18
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Properties of Zero   [#permalink] 24 Jan 2019, 07:18
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Properties of Zero

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