18. Which of the following Boolean expression(s) implement the following statement?
andy are not equal to zero, and they are either both positive or both negative(read carefully)
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Therefore, b² is divisible by 3. So, b is also divisible by 3. (3)
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Therefore, (2) and (3) a and b are divisible by 3. So, they have common factor 3. But this contradict our assumption. Our assumption is that a and b are co - prime.
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Therefore, our assumption is wrong!
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So, √3 is a irrational number.
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Explanation:
Therefore, b² is divisible by 3. So, b is also divisible by 3. (3)
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