LOGIC

Ex. No. 1.1



State which of the following sentences are statements. Justify your answer. In case of statements, Write down the truth value. [video]


  1. March is the month in English Calendar.
  2. May God bless you!
  3. The sum of interior angles of a quadrilateral is 3600.
  4. Every natural number is a real number.
  5. Is the car yellow in colour?
  6. Every quadratic equation has only real roots.
  7. √-4 is a rational number.
  8. x2 – 5x + 6 = 0 implies that x = - 2 or x = - 3
  9. The sum of cube roots of unit is one.
  10. Please, come here.
  11. He is a bad person.
  12. Two is the only even prime number.
  13. sin 3θ = 3 sinθ – 4 sin3θ ,  for all θ ∈ R.
  14. What a horrible sight it was!
  15. Do not come inside the room.
  16. x2 + 5x + 6 = 0 , x = -2.
  17. Can you speak in English?
  18. The square of every real number is Negative.
  19. It is blue in colour.
  20. Every rectangle is a square.