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

 It is currently 02 Jul 2015, 13:30

### 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

# After the LuckyAir flight arrived in Las Vegas, John went to

Author Message
TAGS:
Senior Manager
Joined: 02 Oct 2005
Posts: 297
Followers: 1

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

After the LuckyAir flight arrived in Las Vegas, John went to [#permalink]  19 Oct 2005, 12:09
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
After the LuckyAir flight arrived in Las Vegas, John went to
the strip to gamble. At the craps table, John bet $20 on boxcars (two sixes). If John rolls two fair, six-sided dice, what is the probability that he will roll two sixes? A. 2/12 B. 1/8 C. 1/2 D. 1/24 E. 1/36 VP Joined: 06 Jun 2004 Posts: 1059 Location: CA Followers: 2 Kudos [?]: 54 [0], given: 0 [#permalink] 19 Oct 2005, 13:46 Probability of rolling a 6 on the 1st dice = 1/6 Probability of rolling a 6 on the 2nd dice = 1/6 Since these are not OR probabilities, meaning they both have to occur, you mulitply them. 1/6 * 1/6 = 1/36 Senior Manager Joined: 02 Oct 2005 Posts: 297 Followers: 1 Kudos [?]: 8 [0], given: 0 [#permalink] 19 Oct 2005, 17:53 OA is E. Here is the detailed explanation: If two events are independent, the probability of both events occurring is the product of the two individual probabilities. The rolling of each die is an independent event. The outcome of one die does not affect the outcome of the other. The probability of an event occurring is the number of possible outcomes for the event divided by the total number of possible outcomes. Their is only one outcome out of six that will produce a six when you roll a die. Thus, the probability of one die rolling a six is 1/6. The probability of rolling two sixes is (1/6)*(1/6) or 1/36. GMAT Club Legend Joined: 07 Jul 2004 Posts: 5068 Location: Singapore Followers: 23 Kudos [?]: 193 [0], given: 0 [#permalink] 19 Oct 2005, 18:04 P(two six) = P(six on die 1) * P(six on die 2) = 1/36 Senior Manager Joined: 14 Apr 2005 Posts: 418 Location: India, Chennai Followers: 1 Kudos [?]: 6 [0], given: 0 Re: PS: Probability - Dice + Vegas [#permalink] 19 Oct 2005, 20:56 sudhagar wrote: After the LuckyAir flight arrived in Las Vegas, John went to the strip to gamble. At the craps table, John bet$20 on
boxcars (two sixes). If John rolls two fair, six-sided dice,
what is the probability that he will roll two sixes?

A. 2/12
B. 1/8
C. 1/2
D. 1/24
E. 1/36

These are independent events. So it is the product of each of the probablities.

Hence it is (1/6) * (1/6) = 1/36
Re: PS: Probability - Dice + Vegas   [#permalink] 19 Oct 2005, 20:56
Similar topics Replies Last post
Similar
Topics:
3 Mike drives his new Corvette from San Francisco to Las Vegas, a journe 5 10 Feb 2015, 07:43
4 Four friends, Charles, Mike, Brian, and John, went on a shopping trip. 7 27 Jan 2015, 06:47
4 John and Jane went out for a dinner and they ordered the 3 26 Jul 2014, 10:39
2 A slot machine in a Las Vegas casino has an average profit of \$600 for 4 26 Feb 2011, 09:45
The flight! Thanks for your explanation 2 19 Jul 2010, 22:03
Display posts from previous: Sort by