Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 02 Jul 2015, 16:04

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

A certain calculator is able to display atmost 10 digits, so

Author Message
TAGS:
Manager
Joined: 06 May 2005
Posts: 61
Location: India
Followers: 1

Kudos [?]: 3 [0], given: 0

A certain calculator is able to display atmost 10 digits, so [#permalink]  18 May 2005, 12:59
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
A certain calculator is able to display atmost 10 digits, so that any number with a total of more than 10 digits before and after the decimal point cannot be displayed accurately. If x and Y are positive integers less than 1000, can the result of dividing x by y be displayed accurately on the calculator

A ) 105 < x < 108

B ) 3 < y < 6

_________________

Its not the fact its your attitude towards the fact

Director
Joined: 18 Apr 2005
Posts: 548
Location: Canuckland
Followers: 1

Kudos [?]: 8 [0], given: 0

B.

condition A isn't sufficient since dividing some numbers in the range by say 3 or 7 will result in irrational numbers (infinite number of decimals)

condition B. is perfect because we have and 5, 4 gives you up to 2 decimals, and 5 - up to 1
1/4 = .25 and 1/5 = 0.2, multiply any integer by them and you will see
Senior Manager
Joined: 15 Mar 2005
Posts: 419
Location: Phoenix
Followers: 2

Kudos [?]: 12 [0], given: 0

Re: DS : Numbers Divisibility [#permalink]  18 May 2005, 13:17
If we have a non terminating (repeating or non repeating) decimal representation of the fraction, it can't be displayed accurately.

A. x is 106 or 107. For (say) 106, a denominator of 2 would display correctly (53), but a denominator of 3 would not (35.33333333333). Insufficient.

B. x is any value. y is 4 or 5. For any fraction (with a whole number as the numerator), a denominator of 4 would produce terminating decimal representation of (.0, .25, .5 or .75) and a denominator of 5 would produce a terminating decimal representation of (.0, .2, .4, .6, or .8), none of which is non terminating. Besides, the number of digits for the quotient for dividends upto 1000 doesn't exceed 3. Thus sufficient.

B.
_________________

Who says elephants can't dance?

Manager
Joined: 04 Mar 2005
Posts: 106
Location: NYC
Followers: 2

Kudos [?]: 3 [0], given: 0

Re: DS : Numbers Divisibility [#permalink]  19 May 2005, 08:03
B is sufficient. Same reason as Kapslock. Division by 4 & 5 produce terminating decimals.
Might be beneficial to know division by which numbers would typically result in recurring decimals
Typically Division by 3,6,7,9,11 etc yield recurring decimals
Re: DS : Numbers Divisibility   [#permalink] 19 May 2005, 08:03
Similar topics Replies Last post
Similar
Topics:
4 In a certain two-digit integer, the ratio of the units digit 8 07 Jan 2013, 21:46
6 The price of a certain property increased by 10% in the 6 13 Oct 2009, 05:41
\$10,000 is deposited in a certain account that pays r 1 10 May 2008, 02:13
A three-digit code for certain logs uses the digits 0, 1, 2, 2 28 Apr 2008, 12:26
Display posts from previous: Sort by