GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 22 Aug 2019, 04:51

Close

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
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.

Close

Request Expert Reply

Confirm Cancel

Seiko has a 6-sided number cube with sides labeled 1 through 6. If she

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Find Similar Topics 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 57238
Seiko has a 6-sided number cube with sides labeled 1 through 6. If she  [#permalink]

Show Tags

New post 03 Jan 2019, 11:44
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

90% (00:46) correct 10% (00:47) wrong based on 35 sessions

HideShow timer Statistics

Manager
Manager
avatar
B
Joined: 01 May 2017
Posts: 82
Location: India
Re: Seiko has a 6-sided number cube with sides labeled 1 through 6. If she  [#permalink]

Show Tags

New post 05 Jan 2019, 19:21
1
Seiko has a 6-sided number cube with sides labeled 1 through 6. If she rolls the cube twice, what is the probability that the product of the two rolls is less than 36?

for the product to be less than 36, both the time cube should not roll to 6, Since 6*6 = 36 is the only possibility

First roll probability = 6 (any number 1- 6 can be possible)
Second roll probability = 6

Total number of possibilities = 6*6
= 36

But Showing up of 6(First Roll) and 6(Second roll) can happen only in one way
=> probability of product >= 36 is 1/36
Probability of \(Product < 36 = 1-1/36 = 35/36\)
Option E is correct
GMAT Club Legend
GMAT Club Legend
User avatar
D
Joined: 18 Aug 2017
Posts: 4512
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
GMAT ToolKit User Premium Member CAT Tests
Re: Seiko has a 6-sided number cube with sides labeled 1 through 6. If she  [#permalink]

Show Tags

New post 06 Jan 2019, 04:59
Bunuel wrote:
Seiko has a 6-sided number cube with sides labeled 1 through 6. If she rolls the cube twice, what is the probability that the product of the two rolls is less than 36?

(A) 1/6
(B) 1/3
(C) 2/3
(D) 5/6
(E) 35/36



product of two rolls would be >36 only at 6,6 whose P is 1/36

so for a 6 sided cube to get product <36 would be
1-1/36 = 35/36 IMO E
_________________
If you liked my solution then please give Kudos. Kudos encourage active discussions.
GMAT Club Bot
Re: Seiko has a 6-sided number cube with sides labeled 1 through 6. If she   [#permalink] 06 Jan 2019, 04:59
Display posts from previous: Sort by

Seiko has a 6-sided number cube with sides labeled 1 through 6. If she

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne