Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2301:30 AM EDT
-02:30 AM EDT
Struggling with GMAT Verbal as a non-native speaker? Harsh improved his score from 595 to 695 in just 45 days—and scored a 99 %ile in Verbal (V88)! Learn how smart strategy, clarity, and guided prep helped him gain 100 points.
Apr 2212:30 AM EDT
-01:30 AM EDT
At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
Apr 2308:00 PM PDT
-09:00 PM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
28 Jan 2021, 04:09
Kudos
Bookmarks
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
65% (01:50) correct
35%
(02:15)
wrong
based on 194
sessions
History
Date
Time
Result
Not Attempted Yet
The oasis output of Abu Ilan in the heart of the Negev desert, has a population of 20 Bedouin tribesmen and 20 Farma tribesmen. El Kamin, a nearby oasis, has a population of 32 Bedouin tribesmen and 8 Farima tribesmen. A lost soldier (from another country), accidentally seperated from his army unit, is wandering through the desert and arrives at the edge of one of the oases. The soldier has no idea which oasis he has found, but the first person he spots from a distance is a Bedouin. What is the probability that he wandered into Abu Illan?
A. 7/20
B. 5/13
C. 1/2
D. 8/13
E. 13/20
Are You Up For the Challenge: 700 Level Questions: 700 Level Questions
A. 7/20
B. 5/13
C. 1/2
D. 8/13
E. 13/20
Are You Up For the Challenge: 700 Level Questions: 700 Level Questions
fall2021
Current Student
Joined: 08 Apr 2018
Last visit: 25 Feb 2022
Posts: 233
Given Kudos: 89
Location: India
Concentration: Marketing, Strategy
Schools: Ross '23 (WL) CBS '23 (D) McDonough'23 (M$) Marshall'23 (A) Darden '23 (D) Stern '23 (WL) Booth '23 (D) Kellogg 1Year '22 (WL) Yale '23 (D) LBS '23 (D) Sloan Fellows '22 (D) Foster '23 (D)
GMAT 1: 750 Q50 V40 (Online)
GMAT 2: 760 Q50 V42
GPA: 3.2
WE:Marketing (Telecommunications)
Schools: Ross '23 (WL) CBS '23 (D) McDonough'23 (M$) Marshall'23 (A) Darden '23 (D) Stern '23 (WL) Booth '23 (D) Kellogg 1Year '22 (WL) Yale '23 (D) LBS '23 (D) Sloan Fellows '22 (D) Foster '23 (D)
GMAT 2: 760 Q50 V42
Posts: 233
28 Jan 2021, 07:45
Kudos
Bookmarks
Probability of finding Bedouin in Abu Ilan = 20/40 = 1/2
Probability of finding Bedouin in El Kamin = 32/40 = 4/5
Given Bedouin, probability of Abu Ilan = 1/2/(1/2+4/5) = 5/13
Option B
Posted from my mobile device
Probability of finding Bedouin in El Kamin = 32/40 = 4/5
Given Bedouin, probability of Abu Ilan = 1/2/(1/2+4/5) = 5/13
Option B
Posted from my mobile device
08 Feb 2021, 12:15
Kudos
Bookmarks
Bunuel
Solution:
P(Bedouin) = P(Bedouin from Abu Ilan) * P(Abu Ilan) + P(Bedouin from El Kamin) * P(El Kamin)
= 20/40 * 1/2 + 32/40 * 1/2
= 10/40 + 16/40 = 26/40 = 13/20
P(Abu Ilan given Bedouin) = P(Bedouin from Abu Ilan) * P(Abu Ilan) / P(Bedouin)
= (10/40) / (13/20) = 1/4 x 20/13 = 5/13
Answer: B
