Six lectures are scheduled in a week starting from Monday and ending on Sunday with one off day in between. Computer science is not or Tuesday on Saturday. Psychology is immediately after organisational behaviour. Statistics is not on Friday and there is one day gap between statistics and Research methods. One day prior to the schedule of Economics there is no lecture (as that day is the off day and Monday is not the off day)

On which day is computer science scheduled ?

Thursday

The correct answer is Option (2) → Thursday

Here is logic:

1. The week starting from Monday and ending on Sunday with one off day.
2. Off day: Not Monday, Friday, or Saturday.
3. Psychology: Follows Organizational Behaviour.
4. Statistics: Not on Friday, with a gap before Research Methods.
5. Economics: Preceded by an off day.

Analysis:

• Since Monday isn't the off day, it must be either Wednesday or Thursday.

• If Wednesday is the off day, then Economics would be on Tuesday, which would mean Psychology is on Monday, conflicting with the information that Statistics and Research Methods have a gap between them.

• Therefore, Thursday must be the off day. This leaves Wednesday for Economics and Tuesday for Psychology, satisfying the Psychology-Organizational Behaviour sequence.

• With Friday unavailable for Statistics and a gap needed before Research Methods, Statistics must be on Monday.

• Finally, with Tuesday and Saturday occupied, Computer Science is left for Thursday.