Decimal & Fraction

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crackthetest: Senior | Next Rank: 100 Posts; Posts: 40; Joined: Mon Feb 16, 2009 8:50 pm; Thanked: 3 times

by crackthetest » Sat Mar 06, 2010 10:27 pm

If the fraction d were converted into a decimal, would there be more than 3 nonzero digits to the right of the decimal point?
(1) The denominator of d is exactly 8 times the numerator of d.

(2) If d were converted into a decimal, d would be a non-repeating decimal.

A - Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B - Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C - Both statements TOGETHER are sufficient, but NEITHER one ALONE is sufficient.
D - EACH statement ALONE is sufficient.
E - Statements (1) and (2) TOGETHER are NOT sufficient.

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Source: Beat The GMAT — Data Sufficiency | Sat Mar 06, 2010 10:27 pm

thephoenix: Legendary Member; Posts: 1560; Joined: Tue Nov 17, 2009 2:38 amFollowed by: 5 members; Thanked: 137 times

by thephoenix » Sun Mar 07, 2010 12:52 am

crackthetest wrote:If the fraction d were converted into a decimal, would there be more than 3 nonzero digits to the right of the decimal point?
(1) The denominator of d is exactly 8 times the numerator of d.

(2) If d were converted into a decimal, d would be a non-repeating decimal.

A - Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B - Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C - Both statements TOGETHER are sufficient, but NEITHER one ALONE is sufficient.
D - EACH statement ALONE is sufficient.
E - Statements (1) and (2) TOGETHER are NOT sufficient.

IMO A

1) 1/8=0.125
ans no
hence suff

2)d can be .12;.123;.1234

so inconclusion insuff

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snigdha1605: Senior | Next Rank: 100 Posts; Posts: 43; Joined: Fri Feb 22, 2013 10:41 pm; Thanked: 3 times

by snigdha1605 » Wed May 08, 2013 10:59 am

But isnt the definition of a non repeating definition - A decimal that neither terminates nor repeats ?

Source : https://www.icoachmath.com/math_dictiona ... cimal.html

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Blue_Skies: Senior | Next Rank: 100 Posts; Posts: 81; Joined: Thu May 03, 2012 1:48 pm; Thanked: 4 times

by Blue_Skies » Wed May 08, 2013 12:34 pm

snigdha1605 wrote:But isnt the definition of a non repeating definition - A decimal that neither terminates nor repeats ?

Source : https://www.icoachmath.com/math_dictiona ... cimal.html

yes that's true but here the question is :

If the fraction d were converted into a decimal, would there be more than 3 nonzero digits to the right of the decimal point?
(1) The denominator of d is exactly 8 times the numerator of d.

(2) If d were converted into a decimal, d would be a non-repeating decimal.

As per 2 the decimal can be 0.12 or 0.312 both of which qualifies 2 but one gives an violates given expression(0.12) and the other does not(0.312).

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