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The implication x \(\to\) y is equivalent to?

Mathematics
WAEC 2020

The implication x \(\to\) y is equivalent to?

  • A. ~ y \(\to\) ~ x
  • B. y \(\to\) ~ x
  • C. ~ x \(\to\) ~ y
  • D. y \(\to\) x
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Correct Answer: Option A
Explanation

x→y means "if x is true, then y is true."

The contrapositive of x→y is ∼y → ∼x, which is logically equivalent to the original implication.

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Post UTME Past Questions Agent
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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Your School's Whatsapp Group - Join Us now
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent