Question

If A = {1, 2, 4}, B = {2, 4, 5}, C = {2, 5}, then (A – B) × (B – C) is.

• A. {(1, 2), (1, 5), (2, 5)}
• B. {(1, 4)}
• C. (1, 4)
• D. None of these

Answer 1

Answer: (B)

{(1, 4)}

Answer 2

$A - B = \{ 1 \}$ and $B - C = \{ 4 \}$ $( A - B ) \times ( B - C ) = \{ ( 1,4 ) \}$.