Question

How to find the length of $f^{n}(a)$ and $i^{th}$ digit for any n such that length of $f^{n}(a)$ is greater than $i$.

score 101 · Answer 1 · 2020-10-01 09:35:24

101

Views

How to find the length of $f^{n}(a)$ and $i^{th}$ digit for any n such that length of $f^{n}(a)$ is greater than $i$.

Published on 01 Oct 2020 - 9:35

score 325 · Answer 2 · 2020-10-07 03:56:15

325

Views

How many six-letter “words” (sequences of letters with repetition) are there? (full question below)

Published on 07 Oct 2020 - 3:56

score 1k · Answer 3 · 2020-10-09 21:06:07

1k

Views

Counting binary strings of length $n$ that contain no two adjacent blocks of 1s of the same length?

Published on 09 Oct 2020 - 21:06

score 102 · Answer 4 · 2020-10-17 00:39:55

102

Views

Number of $4$-letter "words'' that can be constructed with the $12$-letter Hawaiian alphabet

Published on 17 Oct 2020 - 0:39

score 241 · Answer 5 · 2020-10-20 18:07:20

241

Views

How many $6$-letter words can be formed from (A,B,C,C,D,E,F,G), where the Cs cant be near each other and the other letters can be the same?

Published on 20 Oct 2020 - 18:07

score 348 · Answer 6 · 2020-10-20 21:09:25

348

Views

Combinatorics method by splitting

Published on 20 Oct 2020 - 21:09

score 65 · Answer 7 · 2020-10-21 15:58:09

65

Views

Strings made from six $1$'s and six $0$'s

Published on 21 Oct 2020 - 15:58

score 91 · Answer 8 · 2020-10-26 22:12:25

91

Views

Does the question mean she will do all 3 sports on one day in the week, or if she will do all 3 sports in a week, but individually on different days

Published on 26 Oct 2020 - 22:12

score 283 · Answer 9 · 2020-10-29 06:46:57

283

Views

How many ways to form a binary sequence with 0 and 1, where no 3 consecutive digits are 1? (without recurrence)

Published on 29 Oct 2020 - 6:46

score 77 · Answer 10 · 2026-03-26 04:50:09

77

Views

CNF formula for manipulating words

Published on 26 Mar 2026 - 4:50

score 69 · Answer 11 · 2020-11-09 15:21:47

69

Views

Total pairs of binary strings permuted from $n-m$ $1$s and $m$ $0$s so that all initial substrings of $(1)$ have more $0$s than that of $(2)$

Published on 09 Nov 2020 - 15:21

score 144 · Answer 12 · 2026-03-27 02:15:30

144

Views

A property of Lyndon words.

Published on 27 Mar 2026 - 2:15

score 69 · Answer 13 · 2020-11-15 07:04:44

69

Views

A letter sequence problem

Published on 15 Nov 2020 - 7:04

score 73 · Answer 14 · 2020-11-15 13:07:57

73

Views

How many 8 letter words are there using the letters X, Y, Z containing at least one X and two Ys?

Published on 15 Nov 2020 - 13:07

score 192 · Answer 15 · 2020-11-21 22:11:53

192

Views

How many words of length $10$ are there in which not all of the vowels A, E, I, O, U appear?

Published on 21 Nov 2020 - 22:11

List Question

How to find the length of $f^{n}(a)$ and $i^{th}$ digit for any n such that length of $f^{n}(a)$ is greater than $i$.

How many six-letter “words” (sequences of letters with repetition) are there? (full question below)

Counting binary strings of length $n$ that contain no two adjacent blocks of 1s of the same length?

Number of $4$-letter "words'' that can be constructed with the $12$-letter Hawaiian alphabet

How many $6$-letter words can be formed from (A,B,C,C,D,E,F,G), where the Cs cant be near each other and the other letters can be the same?

Combinatorics method by splitting

Strings made from six $1$'s and six $0$'s

Does the question mean she will do all 3 sports on one day in the week, or if she will do all 3 sports in a week, but individually on different days

How many ways to form a binary sequence with 0 and 1, where no 3 consecutive digits are 1? (without recurrence)

CNF formula for manipulating words

Total pairs of binary strings permuted from $n-m$ $1$s and $m$ $0$s so that all initial substrings of $(1)$ have more $0$s than that of $(2)$

A property of Lyndon words.

A letter sequence problem

How many 8 letter words are there using the letters X, Y, Z containing at least one X and two Ys?

How many words of length $10$ are there in which not all of the vowels A, E, I, O, U appear?

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