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P, Q, R and S crossed a lake in a boat that can hold a maximum of two persons, with only one set of oars. The following additional facts are available
i. The boat held two persons on each of the three forward trips across lake and one person on each of the two return trips.
ii. P is unable to row when someone else is in the boat.
iii. Q is unable to row with anyone else except R.
iv. Each person rowed for at least one trip.
v. Only one person can row during a trip.
Who rowed twice?
  • a)
    P
  • b)
    Q
  • c)
    R
  • d)
    S
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
P, Q, R and S crossed a lake in a boat that can hold a maximum of two ...
Since, P cannot row with anyone else so P must row while on return journey.
So, on first trip P & S leave in which S rows.
On the return trip P will row
On next trip P will leave with R and R will row & P will get down on other end.
Now R will return & row to pick Q up.
On the last trip Q & R will go in which Q will row the boat.
Hence, R rowed the boat twice
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Most Upvoted Answer
P, Q, R and S crossed a lake in a boat that can hold a maximum of two ...
Analysis:

Given Facts:
- The boat can hold a maximum of two persons.
- There were three forward trips across the lake and two return trips.
- P cannot row when someone else is in the boat.
- Q can only row with R.
- Each person rowed for at least one trip.
- Only one person can row during a trip.

Solution:
1. First Trip: P and Q row across the lake.
2. Second Trip: Q returns alone.
3. Third Trip: R and S row across the lake.
4. Fourth Trip: P returns alone.
5. Fifth Trip: P and Q row across the lake.

Analysis:
- P rowed in the first and fifth trips.
- Q rowed in the first and fifth trips.
- R rowed in the third trip.
- S rowed in the third trip.
Therefore, R rowed twice in this scenario.
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P, Q, R and S crossed a lake in a boat that can hold a maximum of two persons, with only one set of oars. The following additional facts are availablei. The boat held two persons on each of the three forward trips across lake and one person on each of the two return trips.ii. P is unable to row when someone else is in the boat.iii. Q is unable to row with anyone else except R.iv. Each person rowed for at least one trip.v. Only one person can row during a trip.Who rowed twice?a)Pb)Qc)Rd)SCorrect answer is option 'C'. Can you explain this answer?
Question Description
P, Q, R and S crossed a lake in a boat that can hold a maximum of two persons, with only one set of oars. The following additional facts are availablei. The boat held two persons on each of the three forward trips across lake and one person on each of the two return trips.ii. P is unable to row when someone else is in the boat.iii. Q is unable to row with anyone else except R.iv. Each person rowed for at least one trip.v. Only one person can row during a trip.Who rowed twice?a)Pb)Qc)Rd)SCorrect answer is option 'C'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about P, Q, R and S crossed a lake in a boat that can hold a maximum of two persons, with only one set of oars. The following additional facts are availablei. The boat held two persons on each of the three forward trips across lake and one person on each of the two return trips.ii. P is unable to row when someone else is in the boat.iii. Q is unable to row with anyone else except R.iv. Each person rowed for at least one trip.v. Only one person can row during a trip.Who rowed twice?a)Pb)Qc)Rd)SCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for P, Q, R and S crossed a lake in a boat that can hold a maximum of two persons, with only one set of oars. The following additional facts are availablei. The boat held two persons on each of the three forward trips across lake and one person on each of the two return trips.ii. P is unable to row when someone else is in the boat.iii. Q is unable to row with anyone else except R.iv. Each person rowed for at least one trip.v. Only one person can row during a trip.Who rowed twice?a)Pb)Qc)Rd)SCorrect answer is option 'C'. Can you explain this answer?.
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