Question

How many different codes can be formed such that the code consists of two letters followed by four digits?

score 226 · Answer 1 · 2021-01-28 09:58:46

226

Views

How many different codes can be formed such that the code consists of two letters followed by four digits?

Published on 28 Jan 2021 - 9:58

score 213 · Answer 2 · 2021-01-28 14:48:30

213

Views

In how many ways can 4-digit numbers be formed using 2,2,8,8 if each digit is used once only?

Published on 28 Jan 2021 - 14:48

score 124 · Answer 3 · 2021-01-28 17:02:09

124

Views

How many ways can we write a word of 4 letters from the group of {1,2,3,4} without the sequence 12 and 23?

Published on 28 Jan 2021 - 17:02

score 77 · Answer 4 · 2021-01-29 07:27:07

77

Views

Recurrence relations for strings of $0$'s and $1$'s of length $n$ where no $k$ consecutive $1$'s appear.

Published on 29 Jan 2021 - 7:27

score 1k · Answer 5 · 2021-02-08 19:08:20

1k

Views

How many words/strings of length 5 can we make using the first 10 letters of the alphabet with at least one repeated letter?

Published on 08 Feb 2021 - 19:08

score 182 · Answer 6 · 2021-02-10 16:32:36

182

Views

Help with reasoning on how to set up a recurrence relation

Published on 10 Feb 2021 - 16:32

score 401 · Answer 7 · 2021-02-13 17:48:58

401

Views

Probability of a specific binary string sub-sequence occurring

Published on 13 Feb 2021 - 17:48

score 142 · Answer 8 · 2021-02-23 04:23:00

Let $t_n$ be the number of strings of length $n$ that do not contain $11$ as a substring over the alphabet $\{ 1,2,3 \}$, prove $t_n =$ (cont.)

score 137 · Answer 9 · 2021-02-23 08:22:30

137

Views

Words of length $10$ in alphabet $\{a,b,c\}$ such that the letter $a$ is always doubled

Published on 23 Feb 2021 - 8:22

score 82 · Answer 10 · 2021-03-03 20:55:14

82

Views

How many length 10 words can we make that start with "TRY" or end with "TRY"?

Published on 03 Mar 2021 - 20:55

score 39 · Answer 11 · 2021-03-06 09:37:58

39

Views

Composing words from a limited letter supply

Published on 06 Mar 2021 - 9:37

score 115 · Answer 12 · 2021-03-07 03:45:27

115

Views

Bijection between binary strings with an even-length palindromic prefix and binary strings with a bifix

Published on 07 Mar 2021 - 3:45

score 315 · Answer 13 · 2021-03-07 13:42:50

315

Views

Counting the number of passwords of length 6 with the given conditions

Published on 07 Mar 2021 - 13:42

score 658 · Answer 14 · 2021-03-07 16:42:49

658

Views

Combinatorics Question with vowels

Published on 07 Mar 2021 - 16:42

score 77 · Answer 15 · 2021-03-07 16:45:33

77

Views

How many words of length $n$ is it possible to create from $\{a,b,c\}$ without any “$c$”s after a “$b$”?

Published on 07 Mar 2021 - 16:45

List Question

How many different codes can be formed such that the code consists of two letters followed by four digits?

In how many ways can 4-digit numbers be formed using 2,2,8,8 if each digit is used once only?

How many ways can we write a word of 4 letters from the group of {1,2,3,4} without the sequence 12 and 23?

Recurrence relations for strings of $0$'s and $1$'s of length $n$ where no $k$ consecutive $1$'s appear.

How many words/strings of length 5 can we make using the first 10 letters of the alphabet with at least one repeated letter?

Help with reasoning on how to set up a recurrence relation

Probability of a specific binary string sub-sequence occurring

Let $t_n$ be the number of strings of length $n$ that do not contain $11$ as a substring over the alphabet $\{ 1,2,3 \}$, prove $t_n =$ (cont.)

Words of length $10$ in alphabet $\{a,b,c\}$ such that the letter $a$ is always doubled

How many length 10 words can we make that start with "TRY" or end with "TRY"?

Composing words from a limited letter supply

Bijection between binary strings with an even-length palindromic prefix and binary strings with a bifix

Counting the number of passwords of length 6 with the given conditions

Combinatorics Question with vowels

How many words of length $n$ is it possible to create from $\{a,b,c\}$ without any “$c$”s after a “$b$”?

Trending Questions

Popular # Hahtags

Popular Questions