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terminating decimal

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Re: terminating decimal

by piyush_nitt » Sun Feb 01, 2009 7:13 pm
mariah wrote:106. Which of the following is terminating decimal?
I.1/12
II.1/10^2
III.1/2^10

1. 1/12 = .83838383.....
2. 1/100 = .01
3. 1/2^10 = 1/1024 = .000965625 (used calculator:))

IMO A

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Re: terminating decimal

by mariah » Mon Feb 02, 2009 5:45 am
piyush_nitt wrote:
mariah wrote:106. Which of the following is terminating decimal?
I.1/12
II.1/10^2
III.1/2^10

1. 1/12 = .83838383.....
2. 1/100 = .01
3. 1/2^10 = 1/1024 = .000965625 (used calculator:))

IMO A

Request: Please paste the complete problem alongwith Options.
don't forget to take it on your gmat exam :)
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by krisraam » Mon Feb 02, 2009 5:57 am
If you can express the denominator in the form of 2^x or 5^y or both. The decimal terminates.

1/12 ==> 1/(2^2 * 3) non terminating

1/10^2 ==> 1/(2^2 * 5^2) terminating

1/2^10 ==> terminating

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Raama
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by ontopofit » Mon Feb 02, 2009 6:03 am
:D now use ur calculator to find out this

i guess if the denominator's factors consist of 2,3 and 7 only are non-terminating.

please cofirm.not very sure.
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by mals24 » Mon Feb 02, 2009 6:10 am
krisraam is right

Only if your denominator is in the form of 2^n, 5^n or 2^n*5^n then only will the number be a terminating decimal.
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by coffee5251 » Mon Feb 02, 2009 6:54 am
mals24 wrote:krisraam is right

Only if your denominator is in the form of 2^n, 5^n or 2^n*5^n then only will the number be a terminating decimal.
Is this true for every number or just for the problem above?
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by coffee5251 » Mon Feb 02, 2009 7:06 am
mals24 wrote:krisraam is right

Only if your denominator is in the form of 2^n, 5^n or 2^n*5^n then only will the number be a terminating decimal.
Is this true for every number or just for the problem above?
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Re: terminating decimal

by aroon7 » Mon Feb 02, 2009 8:38 am
piyush_nitt wrote:
mariah wrote:106. Which of the following is terminating decimal?
I.1/12
II.1/10^2
III.1/2^10

1. 1/12 = .83838383.....
2. 1/100 = .01
3. 1/2^10 = 1/1024 = .000965625 (used calculator:))

IMO A

Request: Please paste the complete problem alongwith Options.
so the answer should be 2 & 3 right?
Why do you say it is A?
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by krisraam » Mon Feb 02, 2009 10:26 am
coffee5251 wrote:
mals24 wrote:krisraam is right

Only if your denominator is in the form of 2^n, 5^n or 2^n*5^n then only will the number be a terminating decimal.
Is this true for every number or just for the problem above?
For every number.

Thanks
Raama
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by aroon7 » Mon Feb 02, 2009 10:30 am
krisraam wrote:
coffee5251 wrote:
mals24 wrote:krisraam is right

Only if your denominator is in the form of 2^n, 5^n or 2^n*5^n then only will the number be a terminating decimal.
Is this true for every number or just for the problem above?
For every number.

Thanks
Raama
Raama,

but what abt the numerator... should it be always 1??
because 6/3 = 2 terminating
5/3 = 1.66 not terminating

pl help
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by krisraam » Mon Feb 02, 2009 10:48 am
aroon7 wrote:
krisraam wrote:
coffee5251 wrote:
mals24 wrote:krisraam is right

Only if your denominator is in the form of 2^n, 5^n or 2^n*5^n then only will the number be a terminating decimal.
Is this true for every number or just for the problem above?
For every number.

Thanks
Raama
Raama,

but what abt the numerator... should it be always 1??
because 6/3 = 2 terminating



5/3 = 1.66 not terminating

pl help
I believe Numerator can be any number.
Numerator and denominator should be in such a way the result is a decimal not a integer ( 6/3 = 2 is an integer)

Thanks
Raama
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by sacx » Mon Feb 02, 2009 2:17 pm
it holds true 'only' when the fraction has been simplified

example 49/280 is terminating since it can be simplified to 7/40 ( 40 = 2^3 * 5)
SACX
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Re: terminating decimal

by piyush_nitt » Tue Feb 03, 2009 12:44 pm
mariah wrote:
piyush_nitt wrote:
mariah wrote:106. Which of the following is terminating decimal?
I.1/12
II.1/10^2
III.1/2^10

1. 1/12 = .83838383.....
2. 1/100 = .01
3. 1/2^10 = 1/1024 = .000965625 (used calculator:))

IMO A

Request: Please paste the complete problem alongwith Options.
:D :D :D

don't forget to take it on your gmat exam :)
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by mariah » Sat Feb 07, 2009 3:26 pm
oa 2. 3
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