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Sets — MATHS STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceMATHSSets1 Mark
MCQ
If A = {1, 2, 4}, B = {2, 4, 5} and C = {2, 5}, then (A − B) × (B − C) =
  • A
    {(1, 2), (1, 5), (2, 5)}
  • B
    {{1, 4}}
  • C
    (1, 4)
  • D
    {(1, 2)}
✓

Answer

  1. (1, 4)

Solution:

A = {1, 2, 4} and B = {2, 4, 5}

A − B = {1, 2, 4} − {2, 4, 5} = {1}

B={2,4,5} and C = {2, 5}

B − C = {2, 4, 5} − {2, 5} = {4}

(A − B) × (B − C) = {1} × {4} = (1, 4)

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