PRASHNIKAप्रश्निका
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Write the proposition asked for.

Contrapositive

Computer Science20190.5 marksShort answer
Show the case
If A= “It is cloudy” and B= “It is raining”, then write the proposition for:

Answer

Answer

AI
Taking the underlying proposition as "If A, then B" (i.e. "If it is cloudy, then it is raining"): Contrapositive ($\sim B \Rightarrow \sim A$): "If it is not raining, then it is not cloudy."
Boolean Algebra

From ISC 2019 Computer Science Paper 1, question 1(e)(i).

Check your working with the Boolean algebra solver: the steps law by law, the K-map and the logic circuit for any expression.