BPO Operator Shift and College Scheduling

Questions are based on a set of conditions. In answering some of the questions, it may be useful to draw a rough diagram. Choose the response that most accurately and completely answers each question.

A BPO has assigned duty to nine operators - Abdulla, Ballal, Chandan, Dogra, Eshita, Falguni, Ganguli, Henri and Indra - on Monday, January 05, 2009 from 00:00 hours. Each operator commences duty at any of the following hours: 00:00 hrs, 04:00 hrs, 08:00 hrs, 12:00 hrs, 16:00 hrs and 20:00 hrs. At any point in time, at least one operator is required, to take clients' calls. Each operator works continuously for eight hours. All operators located at any single location start work simultaneously. The operators took training in five different colleges - Abhiman College, Sutanama College, Gutakal College, Barala College and Khatanama College. These colleges are located in the cities Jamshedpur, Pune, Noida, Hyderabad and Mangalore, not necessarily in that order. The operators operate from the cities where their respective colleges are located.

• Indra operates alone from a city other than Mangalore and Jamshedpur.
• Operator(s) trained in Abhiman College will start working at 12:00 hrs.
• Only Dogra and Falguni operate from Pune, but they are not trained in Gutakal College.
• Three of the operators took training from Sutanama College, and they operate from Noida.
• The operator(s) from Jamshedpur will start working at 0:00 hrs.
• Abdulla and Henri operate together as a two member team from a single location. They do not operate from Mangalore.
• No operator(s) will join at 20:00 hrs.
• Ballal, who alone operates from his location, was not trained in Barala College, and will commence his duty four hours after the operator(s) trained in Gutakal College.
• The operator(s) trained in Barala College operate from Hyderabad.
• The number of operator(s) trained in Khatanama College is same as the number of operator(s) trained in Barala College.

Which of the following statements must be true?

Which of the following can be true for the operators operating from 20:00 hrs (of January 05, 2009) to 00:00 hrs (of January 06, 2009)?

Which of the following statements must be true for the operator(s) trained in Gutakal College?

Which of the following is not definitely true?

If five operators are working between 16:00 hrs and 20:00 hrs, which of the following must be true?