Question: What integer shows that $$exists the definition of perfect numbers in the video) x:left(Perfectleft(x ight)wedgeleft(20 is true? (Note: you can find Proofs of Existential

What integer shows that ( $ $ ) lexists ( x ) : Veft(Perfectleft( ( x ) Iright)/wedgelleft(20 is true? (Note: you can

Proofs of Existential Statements - To prove that ( exists x Q(x) ) is true, you just have to find such an ( x ) in the d

What integer shows that $$\exists the definition of perfect numbers in the video) x\:\left(Perfect\left(x ight)\wedge\left(20 is true? (Note: you can find Proofs of Existential Statements To prove that 3x Q(x) is true, you just have to find such an x in the domain ("witness") "Perfect" number: a number that is equal to the sum of its proper divisors (e.g. 6 = 1 + 2 + 3, 28 = 1+2+4+7+ 14) Prove that there exists a 4 digit perfect number - Check with SAGEMath: divisors() and sum() -EC: prove that if 2" - 1 is prime, then 2-1(2n-1) is a perfect number n = 7. 2 (2-1) = 818 is perfect

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