Concept explainers
Write each of these propositions in the form "pif and only ifq" in English.
a) For you to get an A in this course, it is necessary and sufficient that you learn how to solve discrete mathematics problems.
b) If you read the newspaper every day, you be informed, and conversely.
c) It rains if it is a weekend day, and it is a weekend day if it rains.
d) You can see the wizard only if the wizard is not in, and the wizard is not in only if you can see him.
e) My airplane flight is late exactly when l have to catch a connecting flight.
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