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 Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

Supermarket D uses 2 tracking systems, S-1 and S-2. Both [#permalink]

Show Tags

09 Nov 2012, 01:37

00:00

A

B

C

D

E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct
0% (00:00) wrong based on 0 sessions

HideShow timer Statistics

Supermarket D uses 2 tracking systems, S-1 and S-2. Both tracking systems use codes, each of which is an ordered sequence of 6 characters. Each code for S-1 consists of 2 digits, each chosen from 0 through 9, followed by 4 letters, each chosen from A through Z but excluding vowels (A, E, I, O, U) and Y. Each code for S-2 consists of 4 digits, each chosen from 0 through 9, followed by 2 letters, each chosen from A through Z but excluding vowels and Y. What fraction of the possible number of S-1 codes is the possible number of S-2 codes? (Note: There are 20 letters from A through Z, excluding vowels and Y.)

Am sorry, no options, but will appreciate your contributions. If the 1st tracking system uses different combinations (2D 4L), how can we have some common elements with the 2nd tracking system, which uses (4D 2L)?
_________________

KUDOS me if you feel my contribution has helped you.

Last edited by Bunuel on 09 Nov 2012, 03:49, edited 1 time in total.

Re: Supermarket D uses 2 tracking systems, S-1 and S-2 [#permalink]

Show Tags

09 Nov 2012, 01:49

gmatbull wrote:

Supermarket D uses 2 tracking systems, S-1 and S-2. Both tracking systems use codes, each of which is an ordered sequence of 6 characters. Each code for S-1 consists of 2 digits, each chosen from 0 through 9, followed by 4 letters, each chosen from A through Z but excluding vowels (A, E, I, O, U) and Y. Each code for S-2 consists of 4 digits, each chosen from 0 through 9, followed by 2 letters, each chosen from A through Z but excluding vowels and Y. What fraction of the possible number of S-1 codes is the possible number of S-2 codes? (Note: There are 20 letters from A through Z, excluding vowels and Y.)

Am sorry, no options, but will appreciate your contributions. If the 1st tracking system uses different combinations (2D 4L), how can we have some common elements with the 2nd tracking system, which uses (4D 2L)?

Question is not asking for common elements and as you rightly mentioned there cant be common codes as one is 2D,4L and other 4L, 2D Instead, question is asking for the fraction that you get as : number of possible codes for S-2 / number of possible codes for S-1 (eg, say if possible number of S-1 is 100 then what fraction of it is S-2 which is 20. re-reading the question now should help )

S-1 = 10*10*20*20*20*20 (Question has no restriction on repeating the digit or letter) S-2 = 10*10*10*10*20*20

After days of waiting, sharing the tension with other applicants in forums, coming up with different theories about invites patterns, and, overall, refreshing my inbox every five minutes to...

I was totally freaking out. Apparently, most of the HBS invites were already sent and I didn’t get one. However, there are still some to come out on...

In early 2012, when I was working as a biomedical researcher at the National Institutes of Health , I decided that I wanted to get an MBA and make the...