profile-img
Eduncle posted an MCQ
December 23, 2019 • 22:50 pm 0 points
  • CSIR NET
  • Physical Sciences

A tells only lies on Monday, Tuesday and Wednesday and speaks only the truth for the rest of the week. B tells only lies on Thursday, Friday and Saturday and speaks only the truth for the rest of the week. If today both of them state that they have lied yesterday, what day is it today ?

Choose Your Answer:
0 Attempts Submit Now
  • 0 Likes
  • 1 Comments
  • 0 Shares
  • comment-profile-img>
    Eduncle Best Answer

    A lies on Monday, Tuesday and Wednesday
    B lies on Thursday, Friday and Saturday
    Both A and B Thursday, Friday and Saturday
    Both A and B will tell truth only on Sunday
    Statement is given that if both A and B state that they have lied yesterday
    The only possibility is that either of A or B is speaking truth or lie
    Consider if A is speaking truth and B is telling lie
    Then only possibility if both state that they have lied yesterday is Thursday
    So option (2) is correct.

whatsapp-btn

Do You Want Better RANK in Your Exam?

Start Your Preparations with Eduncle’s FREE Study Material

  • Updated Syllabus, Paper Pattern & Full Exam Details
  • Sample Theory of Most Important Topic
  • Model Test Paper with Detailed Solutions
  • Last 5 Years Question Papers & Answers