Three local bird-watching clubs-the Avian Club, the Songbird Society, and Urban Bird Lovers-are planning a joint expedition. No one is...
GMAT Multi Source Reasoning : (MSR) Questions
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Expedition Plans
Emails
Three local bird-watching clubs-the Avian Club, the Songbird Society, and Urban Bird Lovers-are planning a joint expedition. No one is a member of more than one of the clubs.
At a meeting of the three clubs, Lee in the Avian Club, Helen in the Songbird Society, and Paul in Urban Bird Lovers were chosen as the expedition coordinators, responsible for selecting the time and place for the expedition. Each club member was instructed to email his or her preferences regarding the expedition directly to his or her own club's expedition coordinator within three days. After these three days, the coordinator was, immediately, to remind any member of his or her club who has failed to do so. It was agreed that the three coordinators should contact each other to coordinate.
Since the meeting, all communications about the expedition have been and will be by email. No such emails were sent before the meeting
Ques. 1/3
For each of the three clubs, select Yes if the information provided indicates that the club has at least five members. Otherwise select No.
Solution
Owning the Dataset
Understanding Source A: Text Source - Expedition Plans
| Information from Dataset | Analysis |
|---|---|
| ""Three local bird-watching clubs-the Avian Club, the Songbird Society, and Urban Bird Lovers-are planning a joint expedition. No one is a member of more than one of the clubs."" |
|
| ""Lee in the Avian Club, Helen in the Songbird Society, and Paul in Urban Bird Lovers were chosen as the expedition coordinators"" |
|
| ""Each club member was instructed to email his or her preferences regarding the expedition directly to his or her own club's expedition coordinator within three days."" |
|
| ""After these three days, the coordinator was, immediately, to remind any member of his or her club who has failed to do so."" |
|
| ""Since the meeting, all communications about the expedition have been and will be by email. No such emails were sent before the meeting"" |
|
- Summary: This planning document establishes the structure for three bird-watching clubs organizing a joint expedition, with designated coordinators managing a 3-day email-based preference collection process
Understanding Source B: Visual Source - Email Communication Network Diagram
- Chart shows: Network diagram displaying all email communications about expedition preferences among club members during the three days after the meeting
- Key patterns observed:
- Three distinct color groups representing the three clubs (5 black nodes, 6 red/orange nodes, 4 blue nodes)
- Total of 15 members shown across all clubs
- Paul has the most incoming email arrows
- Some nodes show bidirectional communication
- Complex network of connections between members
- Key inferences:
- Complete record of expedition-related emails over exactly three days
- Color coding indicates club membership
- Arrows show direction of email receipt (one or more emails per arrow)
- Linkage to Source A:
- Paul's high volume of incoming emails confirms his coordinator role for Urban Bird Lovers
- The diagram shows members violated the instruction to ""email preferences directly to his or her own club's expedition coordinator"" - many cross-club and member-to-member emails are visible
- All communications shown occur within the three-day deadline period, with no post-deadline reminder emails visible
- Summary: The email network diagram reveals that actual communication patterns were far more complex than the simple coordinator-only protocol described in Source A, with extensive cross-club and member-to-member emails occurring during the three-day period
Overall Summary
- The dataset reveals a significant gap between planned communication protocol and actual member behavior during the bird-watching expedition planning
- While Source A established that members should only email their own club's coordinator within three days, Source B's network diagram shows extensive cross-club communication and member-to-member emails
- The three clubs comprise 15 total members with coordinators Lee, Helen, and Paul respectively
- Paul received the most emails, confirming his central coordinator role
- All expedition emails occurred within the three-day deadline period, with no evidence of the post-deadline reminder phase described in the planning document
Source Analysis
Source A Analysis
- There are three bird-watching clubs: Avian Club, Songbird Society, and Urban Bird Lovers
- No one is a member of more than one club
- The expedition coordinators are Lee (Avian Club), Helen (Songbird Society), and Paul (Urban Bird Lovers)
- Members must email their expedition preferences to their own coordinator within 3 days
Source B Analysis
- The network diagram shows all email communications during the 3 days after the meeting
- Nodes of the same color represent members of the same club
- Arrows indicate the direction of email receipt
- All club members are represented
Integration
- From Source A, the coordinators' club memberships are known:
- Lee is in Avian Club
- Helen is in Songbird Society
- Paul is in Urban Bird Lovers
- Using the diagram:
- Black nodes include Lee, so black = Avian Club
- Red/orange nodes include Helen, so red/orange = Songbird Society
- Paul's node has a unique symbol, corresponding to Urban Bird Lovers, associated with blue/light nodes
Membership Counts
- Avian Club (black nodes): Lee, Kevin, Sal, John, Carl – 5 members total
- Songbird Society (red/orange nodes): Helen, Sonya, Julia, David, Ali, Alex – 6 members total
- Urban Bird Lovers (blue/light nodes + Paul): Paul, Lisa, Bill, Sue – 4 members total
Final Analysis
- Avian Club has 5 members: meets the requirement – Yes
- Songbird Society has 6 members: meets the requirement – Yes
- Urban Bird Lovers has 4 members: does not meet the requirement – No
Yes, Yes, No
Answer Choices Explained
A
Yes
No
The Avian Club
B
Yes
No
The Songbird Society
C
Yes
No
Urban Bird Lovers
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