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1981

JEE Main 1981 Mathematics question on Matrices and Determinants

Consider the set AA of all determinants of order 3 with entries 0 or 1 only. Let BB be the subset of AA consisting of all determinants with value 1. Let CC be the subset of AA consisting of all determinants with value −1-1. Then,
  1. A.
    CC is empty
  2. B.
    BB has as many elements as CC
  3. C.
    A=B∪CA = B \cup C
  4. D.
    BB has twice as many elements as CC
Show answer

Correct option: B

[1981]

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