Proof by Contradiction: Exercise

Write the assumption, then prove inequalities, “at least one” statements, results about integers and irrational numbers, and the standard proofs (√2 is irrational, there are infinitely many primes) · eight levels, timed, a model proof for every question

1. Assume the negation of the statement. 2. Reason until you reach something impossible: “This is a contradiction.” 3. Therefore the statement is true.
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