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In: Statistics and Probability

Q1, what is negations of(∃x ∈ Z)x ≤ 0 ⇒ (∀y ∈ Z). xy > 0...

Q1, what is negations of(∃x ∈ Z)x ≤ 0 ⇒ (∀y ∈ Z). xy > 0

Q2, Prove by induction that 14n + 12n − 5 n is divisible by 7 for all n > 0

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