Question

How many $5$-digit positive even numbers can be formed by using all of the digits $1$, $2$, $3$ and $6$?

score 1.4k · Answer 1 · 2018-06-29 16:05:13

1.4k

Views

How many $5$-digit positive even numbers can be formed by using all of the digits $1$, $2$, $3$ and $6$?

Published on 29 Jun 2018 - 16:05

score 7.6k · Answer 2 · 2018-06-29 20:39:48

7.6k

Views

How many 4-letter words have all letters in alphabetical order?

Published on 29 Jun 2018 - 20:39

score 107 · Answer 3 · 2018-07-01 04:40:14

107

Views

m-cycle as the product of distinct transpositions

Published on 01 Jul 2018 - 4:40

score 53 · Answer 4 · 2018-07-01 08:47:26

53

Views

Unique set of difference between nearest numbers in permutations

Published on 01 Jul 2018 - 8:47

score 178 · Answer 5 · 2018-07-01 14:17:18

178

Views

What is the probability of $m$ random elements generating $S_n$?

Published on 01 Jul 2018 - 14:17

score 468 · Answer 6 · 2026-03-25 10:55:26

468

Views

A group $G$ whose automorphism group contains a subgroup isomorphic to $G$

Published on 25 Mar 2026 - 10:55

score 2k · Answer 7 · 2018-07-03 17:53:00

2k

Views

Number of arrangements of the letters of the word CALCULUS where a particular letter comes before another .

Published on 03 Jul 2018 - 17:53

score 2.3k · Answer 8 · 2018-07-04 05:05:06

How many $3$-digit even numbers less than $700$ can be formed from the digits $0, 2, 4, 5, 6, 8$ if repetition of digits is not allowed?

score 560 · Answer 9 · 2026-03-25 19:05:03

560

Views

Closed-form expression for the number of $k$-permutations of length $n$. Duplicates allowed!

Published on 25 Mar 2026 - 19:05

score 26 · Answer 10 · 2018-07-04 15:18:04

26

Views

How to work out the number of ways a user can be asked to enter 3 characters from a memorable word.

Published on 04 Jul 2018 - 15:18

score 607 · Answer 11 · 2026-03-29 15:30:25

607

Views

permutations with repeating symbols and binomial coefficient

Published on 29 Mar 2026 - 15:30

score 128 · Answer 12 · 2026-03-27 07:19:54

128

Views

How many possible invalid AIS message body combinations are there for a specific checksum?

Published on 27 Mar 2026 - 7:19

score 240 · Answer 13 · 2026-03-28 05:26:34

240

Views

Rules for multiplying non-disjunctive permutation cycles

Published on 28 Mar 2026 - 5:26

score 370 · Answer 14 · 2026-03-27 07:17:15

370

Views

arrangements of 10 people at 3 tables with 5 seats each

Published on 27 Mar 2026 - 7:17

score 2.3k · Answer 15 · 2018-07-05 08:47:49

2.3k

Views

What is the probability that all three girls sit together at a circular table if seating is random?

Published on 05 Jul 2018 - 8:47

List Question

How many $5$-digit positive even numbers can be formed by using all of the digits $1$, $2$, $3$ and $6$?

How many 4-letter words have all letters in alphabetical order?

m-cycle as the product of distinct transpositions

Unique set of difference between nearest numbers in permutations

What is the probability of $m$ random elements generating $S_n$?

A group $G$ whose automorphism group contains a subgroup isomorphic to $G$

Number of arrangements of the letters of the word CALCULUS where a particular letter comes before another .

How many $3$-digit even numbers less than $700$ can be formed from the digits $0, 2, 4, 5, 6, 8$ if repetition of digits is not allowed?

Closed-form expression for the number of $k$-permutations of length $n$. Duplicates allowed!

How to work out the number of ways a user can be asked to enter 3 characters from a memorable word.

permutations with repeating symbols and binomial coefficient

How many possible invalid AIS message body combinations are there for a specific checksum?

Rules for multiplying non-disjunctive permutation cycles

arrangements of 10 people at 3 tables with 5 seats each

What is the probability that all three girls sit together at a circular table if seating is random?

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