1. How many of them has given the lecture before C?
Six lecturers have to given lectures in the same week starting from Monday to Saturday each on one day.
I D has given the lecture before at least one lecturer. A has given lecture on Thursday.
II E has given before at least four of them. C has given immediately after E.
III At least five has given lecture before B.
Answer: Option 1 So, from statement I and II it is clear two lecturers have given lecture before C.
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