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What is (0.833)(0.143)(0.875)(0.889)(9) in approximate [#permalink]

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20 Jul 2013, 12:09

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What is (0.833)(0.143)(0.875)(0.889)(9) in approximate fraction form? In approximate decimal form?

Please note that OA and options are NOT available in the source. Please suggest the best approach to solve this in the least possible time. _________________

Re: What is (0.833)(0.143)(0.875)(0.889)(9) in approximate [#permalink]

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20 Jul 2013, 13:21

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bagdbmba wrote:

What is (0.833)(0.143)(0.875)(0.889)(9) in approximate fraction form? In approximate decimal form?

Please note that OA and options are NOT available in the source. Please suggest the best approach to solve this in the least possible time.

5/6 and 0.8333 respectively..

The best approach is to know the pattern of fractions... For example, any fraction, N/3 would be of form X.3333333 or a multiple of it (Y.6666666) or integer Or, any factor, N/4 would be of form X.25 or a multiple (Y.50, Z.75) or integer And so on...

For the given question It comes down to: 5/6 * 1/7 * 7/8 * 8/9 * 9= 5/6 or 0.83333
_________________

Re: What is (0.833)(0.143)(0.875)(0.889)(9) in approximate [#permalink]

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22 Jul 2013, 00:24

Vips0000 wrote:

bagdbmba wrote:

What is (0.833)(0.143)(0.875)(0.889)(9) in approximate fraction form? In approximate decimal form?

Please note that OA and options are NOT available in the source. Please suggest the best approach to solve this in the least possible time.

5/6 and 0.8333 respectively..

The best approach is to know the pattern of fractions... For example, any fraction, N/3 would be of form X.3333333 or a multiple of it (Y.6666666) or integer Or, any factor, N/4 would be of form X.25 or a multiple (Y.50, Z.75) or integer And so on...

For the given question It comes down to: 5/6 * 1/7 * 7/8 * 8/9 * 9= 5/6 or 0.83333

Dude- it's not that I'm not convinced with your approach..It's great and shows the right one i think but as Macfauz rightly mentioned i was looking for official explanation from Veritas (as they're in this business and always strive to improvise things!)

What is (0.833)(0.143)(0.875)(0.889)(9) in approximate [#permalink]

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24 Aug 2013, 09:00

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Recognizing patterns in decimals was a long pending issue with me. So after seeing this question I decided to prepare following chart. Following chart can help you to recognize patterns in decimal places (also applicable for percentage) and you can pic appropriate fraction using it.

I hope this chart will save your effort and time, take a print and paste it on your ceiling

Attachment:

Fraction_Chart.jpg [ 178.94 KiB | Viewed 2107 times ]

Now back to the question:

0.8333 is 5/6, 0.143 is 1/7, 0.875 is 7/8, 0.889 is 8/9

Now it is easy to solve this question.

Regards, Piyushk
_________________

Piyush K ----------------------- Our greatest weakness lies in giving up. The most certain way to succeed is to try just one more time. ― Thomas A. Edison Don't forget to press--> Kudos My Articles: 1. WOULD: when to use?| 2. All GMATPrep RCs (New) Tip: Before exam a week earlier don't forget to exhaust all gmatprep problems specially for "sentence correction".

Re: What is (0.833)(0.143)(0.875)(0.889)(9) in approximate [#permalink]

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16 Nov 2014, 11:33

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Re: What is (0.833)(0.143)(0.875)(0.889)(9) in approximate [#permalink]

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25 Apr 2016, 03:19

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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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