Six lectures A, B, C, D, E and F, each of one hour duration, are scheduled between 8:00 am and 2:00 pm.…

Six lectures A, B, C, D, E and F, each of one hour duration, are scheduled between 8:00 am and 2:00 pm. 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?
  1. Statement-1 alone is sufficient to answer the Question
  2. Statement-2 alone is sufficient to answer the Question
  3. Both Statement-1 and Statement-2 are sufficient to answer the Question
  4. Both Statement-1 and Statement-2 are not sufficient to answer the Question

Solution

Statement 1 tells the relative order A-F-C but not their absolute periods. Statement 2 fixes B last. Combining still leaves multiple possible arrangements (e.g. AFC_ _B, _AFC_B, _ _AFCB), so the third-period lecture cannot be uniquely determined.

Asked in: CSAT 2022

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