Question

How many 5-letter words can be formed out of the letter of the 'EQUATION', if repetition of letters is not allowed?

score 2.6k · Answer 1 · 2018-04-11 00:26:09

How many 5-letter words can be formed out of the letter of the 'EQUATION', if repetition of letters is not allowed?

score 235 · Answer 2 · 2026-04-04 07:02:13

235

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Suppose that a nonnegative integer solution to the equation u + v + w + x + y = 12 How many solutions exist where u = 1

Published on 04 Apr 2026 - 7:02

score 38 · Answer 3 · 2026-03-28 06:40:07

38

Views

distribution of distinct objects

Published on 28 Mar 2026 - 6:40

score 47 · Answer 4 · 2026-03-25 17:43:34

47

Views

How to prove a property in the set partitions problem

Published on 25 Mar 2026 - 17:43

score 258 · Answer 5 · 2026-04-05 02:17:17

258

Views

Gauss identities of $q$-analog

Published on 05 Apr 2026 - 2:17

score 1.3k · Answer 6 · 2026-04-05 09:29:40

1.3k

Views

Importance of $q$-analog

Published on 05 Apr 2026 - 9:29

score 461 · Answer 7 · 2018-04-11 05:40:15

461

Views

A cute little group theory problem

Published on 11 Apr 2018 - 5:40

score 44 · Answer 8 · 2018-04-11 07:03:10

44

Views

combinatorics. how many options to make a ticket?

Published on 11 Apr 2018 - 7:03

score 125 · Answer 9 · 2018-04-11 12:58:32

125

Views

Combinatorics: 11 Fishermen problem

Published on 11 Apr 2018 - 12:58

score 763 · Answer 10 · 2018-04-11 14:19:08

763

Views

Number of possible ways to raise flags on poles

Published on 11 Apr 2018 - 14:19

score 73 · Answer 11 · 2026-04-05 06:53:32

73

Views

$q$-analogs confusion in some steps

Published on 05 Apr 2026 - 6:53

score 699 · Answer 12 · 2018-04-11 15:39:55

699

Views

Ternary strings with 3 or more consecutive 2's

Published on 11 Apr 2018 - 15:39

score 545 · Answer 13 · 2026-04-03 08:22:25

545

Views

Coloring the edges of a complete graph such that no two edges of the same color cross

Published on 03 Apr 2026 - 8:22

score 1.1k · Answer 14 · 2026-03-25 09:43:09

1.1k

Views

Find the number of ways so that each boy is adjacent to at most one girl.

Published on 25 Mar 2026 - 9:43

score 50 · Answer 15 · 2026-04-04 08:43:48

50

Views

If $\binom {28}{2r} : \binom {24} {2r-4} = 225:11$, find $r$.

Published on 04 Apr 2026 - 8:43

List Question

How many 5-letter words can be formed out of the letter of the 'EQUATION', if repetition of letters is not allowed?

Suppose that a nonnegative integer solution to the equation u + v + w + x + y = 12 How many solutions exist where u = 1

distribution of distinct objects

How to prove a property in the set partitions problem

Gauss identities of $q$-analog

Importance of $q$-analog

A cute little group theory problem

combinatorics. how many options to make a ticket?

Combinatorics: 11 Fishermen problem

Number of possible ways to raise flags on poles

$q$-analogs confusion in some steps

Ternary strings with 3 or more consecutive 2's

Coloring the edges of a complete graph such that no two edges of the same color cross

Find the number of ways so that each boy is adjacent to at most one girl.

If $\binom {28}{2r} : \binom {24} {2r-4} = 225:11$, find $r$.

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