Determinants Matrices Question 106

Question: Let A and B be two matrices of order $ n\times n $ . Let A be non-singular and B be singular. Consider the following:
  1. AB is singular
  2. AB is non-singular
  3. $ {A^{-1}}B $ is singular.
  4. $ {A^{-1}}B $ is non-singular Which of the above is/are correct-

Options:

A) 1 and 3

B) 2 and 4 only

C) 1 only

D) 3 only

Show Answer

Answer:

Correct Answer: B

Solution:

  • [b] If A is non-singular and B is singular, then AB is singular and $ {A^{-1}}B $ is singular. Statements (2) and (4) are correct.


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