Neither the first number nor the second number is prime. Which of the following says the same thing?
Answer and explanation
Correct answer: C. The first number is not prime and the second number is not prime
- Step 1: 'Neither nor ' means : both fail.
- Step 2: So both numbers are non-prime.
Answer
The first number is not prime and the second number is not prime.
Why not the others: 'At least one is not prime' is weaker (the other could be prime); 'exactly one prime' and 'at least one prime' contradict the statement; the implication allows both to be non-prime but also allows the first to be non-prime with the second prime.
Practise more Implications, converses and negations.
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More Implications, converses and negations questions
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