List questions from discrete-mathematics

Published on 08 Apr 2026 - 22:48

53

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Proof - Induction

Published on 28 Mar 2026 - 14:20

87

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Prove that (p ∧ q) ∨ (p ∧ r) is equivalent to ¬(p ∧ q) → (p ∧ r)

Published on 25 Sep 2018 - 0:29

166

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How many passwords with one or more digits?

Published on 25 Sep 2018 - 7:54

150

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Converting a supermodular optimization problem to submodular optimization

Published on 26 Mar 2026 - 2:51

276

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Total Cost of List of Items

Published on 09 Apr 2026 - 5:45

91

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Logical Equivalences: $(P\wedge\neg Q)\vee P \equiv P$

Published on 25 Sep 2018 - 18:08

790

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Strong induction - prove that $n \le 3^\frac{n}3$ for every integer $n \ge 0$.

Published on 28 Mar 2026 - 17:40

38

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I'd like to discuss this Venn Diagram

Published on 25 Sep 2018 - 19:18

76

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Prove the logical equivalence $(p \land (q \lor (r ∧ \lnot s) \to v)) ∨ p \equiv p$

Published on 31 Mar 2026 - 17:20

49

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I will buy a car or take a vacation.

Published on 26 Sep 2018 - 1:56

452

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Drawing a graph with chromatic polynomial

Published on 02 Apr 2026 - 8:20

61

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Show (p ∨ ¬q) ∧ (¬p ∨ ¬q) ≡ ¬q

Published on 26 Sep 2018 - 2:38

162

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Let n be any positive integer. Show that $2n - 1 \equiv -1\pmod n$

Published on 29 Mar 2026 - 11:02

92

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Questions about the system $x+c_1\equiv y \pmod z$ and $d=y+c_2$ for integers $x$, $y$, $z$, $c_1$, $c_2$

Published on 24 Mar 2026 - 23:49

List Question

Proof by induction (Recursion)

Proof - Induction

Prove that (p ∧ q) ∨ (p ∧ r) is equivalent to ¬(p ∧ q) → (p ∧ r)

How many passwords with one or more digits?

Converting a supermodular optimization problem to submodular optimization

Total Cost of List of Items

Logical Equivalences: $(P\wedge\neg Q)\vee P \equiv P$

Strong induction - prove that $n \le 3^\frac{n}3$ for every integer $n \ge 0$.

I'd like to discuss this Venn Diagram

Prove the logical equivalence $(p \land (q \lor (r ∧ \lnot s) \to v)) ∨ p \equiv p$

I will buy a car or take a vacation.

Drawing a graph with chromatic polynomial

Show (p ∨ ¬q) ∧ (¬p ∨ ¬q) ≡ ¬q

Let n be any positive integer. Show that $2n - 1 \equiv -1\pmod n$

Questions about the system $x+c_1\equiv y \pmod z$ and $d=y+c_2$ for integers $x$, $y$, $z$, $c_1$, $c_2$

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