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If x = (all prime factors of 44) and y = (all prime factors of...

Mathematics
JAMB 1992
If x = (all prime factors of 44) and y = (all prime factors of 60), the elements of X ∪ Y and X ∩ Y respectively are
  • A. (2, 4, 3, 5, 11) and (4)
  • B. (4, 3, 5, 11) and (3, 4)
  • C. (2, 5, 11) and (2)
  • D. (2, 3, 5, 11) and (2)
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Correct Answer: Option D
Explanation
x = (all prime factors of 44) and y = (all prime factors of 60)

∴ x = (2, 11), y = (2, 3, 5)

X ∪ Y = (2, 3, 5, 11),

X ∩ Y = (2)
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