GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video

 It is currently 26 Feb 2020, 14:00

### 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

# Perry buys a book that has pages numbered from 1 to 980. He then selec

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 61510
Perry buys a book that has pages numbered from 1 to 980. He then selec  [#permalink]

### Show Tags

26 Nov 2019, 00:56
00:00

Difficulty:

55% (hard)

Question Stats:

41% (02:33) correct 59% (02:55) wrong based on 27 sessions

### HideShow timer Statistics

Perry buys a book that has pages numbered from 1 to 980. He then selects one of the pages at random. What is the probability that the number of the page he selects is divisible by 7, given that it is divisible by 3?

A. $$\frac{1}{21}$$

B. $$\frac{1}{7}$$

C. $$\frac{23}{163}$$

D. $$\frac{23}{490}$$

E. $$\frac{29}{171}$$

Are You Up For the Challenge: 700 Level Questions

_________________
GMAT Club Legend
Joined: 18 Aug 2017
Posts: 5920
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
Re: Perry buys a book that has pages numbered from 1 to 980. He then selec  [#permalink]

### Show Tags

26 Nov 2019, 01:06
1
1
pages divisble by 3 ; 980/3 ; ~ 326
and LCM of 3,7 = 21 ; ~ 46 pages
P = 46/326 ; 23/163
IMO C

Bunuel wrote:
Perry buys a book that has pages numbered from 1 to 980. He then selects one of the pages at random. What is the probability that the number of the page he selects is divisible by 7, given that it is divisible by 3?

A. $$\frac{1}{21}$$

B. $$\frac{1}{7}$$

C. $$\frac{23}{163}$$

D. $$\frac{23}{490}$$

E. $$\frac{29}{171}$$

Are You Up For the Challenge: 700 Level Questions
Re: Perry buys a book that has pages numbered from 1 to 980. He then selec   [#permalink] 26 Nov 2019, 01:06
Display posts from previous: Sort by