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# If N = 1234 and represents the units digit, is N a multiple of 5?

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Math Expert
Joined: 02 Sep 2009
Posts: 49271
Re: If N = 1234 and represents the units digit, is N a multiple of 5?  [#permalink]

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27 Jun 2016, 09:21
bhamini1 wrote:
0! is equal to 1? i know i might be asking a very basic question but please enlighten me

Yes, $$0! = 1$$.

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GMAT 1: 710 Q48 V40
Re: If N = 1234 and represents the units digit, is N a multiple of 5?  [#permalink]

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05 Sep 2016, 14:14
prab wrote:
If $$N = 1234@$$ and @ represents the units digit, is N a multiple of 5?

(1) @! is not divisible by 5
(2) @ is divisible by 9

My understanding is that if @! is not divisible by 5 then @ is less than 5 so not divisible by 5

and since @ is divisible by 9, it is not divisible by 5, since 9 is a prime number, so i picked D. but the OA is something else .can some one please explain. Thank you

I got this question on the GMAT club test today and I thought '!' is just another character like '@' . How cool is that? :D Otherwise I got the other finer nuances :D
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Re: If N = 1234 and represents the units digit, is N a multiple of 5?  [#permalink]

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30 Jun 2017, 05:58
Can someone plz explain to me the concept of Combining two option (By integration), How when by using first option we get @=0,1,2,3,4 and by second option we get @=0,9 then by combining two options we get @=0 ?
Math Expert
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If N = 1234 and represents the units digit, is N a multiple of 5?  [#permalink]

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06 Jul 2017, 09:38
gmat4varun wrote:
Can someone plz explain to me the concept of Combining two option (By integration), How when by using first option we get @=0,1,2,3,4 and by second option we get @=0,9 then by combining two options we get @=0 ?

On the GMAT, two data sufficiency statements always provide TRUE information and these statements NEVER contradict each other or the stem.

From (1) @ could be 0, 1, 2, 3, or 4.
From (2) @ could be 0 or 9.

Both to be true {@} has to be 0.
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Re: If N = 1234 and represents the units digit, is N a multiple of 5?  [#permalink]

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27 Aug 2018, 04:13
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Re: If N = 1234 and represents the units digit, is N a multiple of 5? &nbs [#permalink] 27 Aug 2018, 04:13

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