Six lectures A, B, C, D, E and F, each of one hour duration, are scheduled between 8:00 a.m. and 2:00 p.m. Consider the Question and two Statements given below: Question: Which lecture is in the third period? Statement-1: Lecture F is preceded by A and followed by C. Statement-2: There is no lecture after lecture B. Which one of the following is correct in respect of the Question and the Statements?

Statement-1: “F is preceded by A and followed by C” gives the order A-F-C in consecutive periods. This block can be placed as 1-2-3, 2-3-4, 3-4-5, or 4-5-6, so the third period is not uniquely fixed. Verdict: Not sufficient.

Statement-2: “There is no lecture after B” means B is in the 6th period. This gives no information about the third period. Verdict: Not sufficient.

Both together: Even with B fixed at 6th, the block A-F-C can still be placed as 1-2-3, 2-3-4, or 3-4-5. Hence the third period could be C, F, or A depending on arrangement. Verdict: Both together are also not sufficient.

Answer: (d)