Question

Is my answer logically equivalent to the other?

score 66 · Answer 1 · 2026-03-25 17:36:15

66

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Is my answer logically equivalent to the other?

Published on 25 Mar 2026 - 17:36

score 547 · Answer 2 · 2026-04-02 21:21:58

547

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How do I prove the number of derangements formula $nD_{n - 1} + (-1)^n$ intuitively?

Published on 02 Apr 2026 - 21:21

score 88 · Answer 3 · 2018-04-30 20:59:46

88

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calculating different probabilities of a coin toss

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score 124 · Answer 4 · 2018-04-30 23:57:12

124

Views

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score 50 · Answer 5 · 2018-05-01 03:16:34

50

Views

Two approaches to a combinatorics question. Why is my answer wrong?

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score 799 · Answer 6 · 2018-05-01 08:30:52

799

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score 135 · Answer 7 · 2026-03-26 12:58:21

135

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score 1k · Answer 8 · 2026-03-29 15:54:53

1k

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Upper bound relating number of edges of a graph to it's chromatic number

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score 31 · Answer 9 · 2018-05-01 11:58:18

31

Views

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score 62 · Answer 10 · 2018-05-01 12:36:32

62

Views

proving logical explosion

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score 68 · Answer 11 · 2018-05-01 12:54:01

68

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How to count number of integer solutions of this inequality $(x - 1)^2 + (y - 2)^2 + (z - 3)^2\leqslant 81$?

Published on 01 May 2018 - 12:54

score 209 · Answer 12 · 2026-03-28 22:28:20

209

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How many four-digit even numbers with no repeating digits satisfy the inequality $1000 \leq N < 6000$?

Published on 28 Mar 2026 - 22:28

score 248 · Answer 13 · 2026-03-26 12:52:47

248

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Two different subsets of size four with the same sum

Published on 26 Mar 2026 - 12:52

score 1.7k · Answer 14 · 2026-03-26 13:01:18

1.7k

Views

How many even number greater than 300 can be formed from these numbers?

Published on 26 Mar 2026 - 13:01

score 690 · Answer 15 · 2026-03-25 14:53:50

690

Views

Non isomorphic graphs with closed eulerian chains

Published on 25 Mar 2026 - 14:53

List Question

Is my answer logically equivalent to the other?

How do I prove the number of derangements formula $nD_{n - 1} + (-1)^n$ intuitively?

calculating different probabilities of a coin toss

Counting Theory - Discrete Math

Two approaches to a combinatorics question. Why is my answer wrong?

Drawing Hasse Diagrams and determining whether or not they are total order relations

Writing mathematical expressions for selections and arrangements

Upper bound relating number of edges of a graph to it's chromatic number

simple question regarding contradicting a phrase

proving logical explosion

How to count number of integer solutions of this inequality $(x - 1)^2 + (y - 2)^2 + (z - 3)^2\leqslant 81$?

How many four-digit even numbers with no repeating digits satisfy the inequality $1000 \leq N < 6000$?

Two different subsets of size four with the same sum

How many even number greater than 300 can be formed from these numbers?

Non isomorphic graphs with closed eulerian chains

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