Question

How many ways to give five different books to three students?

score 1.3k · Answer 1 · 2026-04-08 06:16:07

1.3k

Views

How many ways to give five different books to three students?

Published on 08 Apr 2026 - 6:16

score 78 · Answer 2 · 2026-04-10 02:43:57

78

Views

Permutation of first $k$ prime powers as a one-way function?

Published on 10 Apr 2026 - 2:43

score 275 · Answer 3 · 2026-04-14 00:57:57

275

Views

How many 10-digit numbers whose first four digits match either the next four digits or the last four digits?

Published on 14 Apr 2026 - 0:57

score 1.3k · Answer 4 · 2026-04-15 13:52:39

1.3k

Views

Prove that the set of permutations of a finite non-empty set is a group with respect to the composition of functions.

Published on 15 Apr 2026 - 13:52

score 40 · Answer 5 · 2026-04-16 00:41:41

40

Views

Characterization of $\tau \in S_n$ such that $\sigma:=(1 \space 2)\tau$ commutes with two distinct transpositions

Published on 16 Apr 2026 - 0:41

score 33 · Answer 6 · 2026-04-15 00:26:32

33

Views

Number of non-shortest paths

Published on 15 Apr 2026 - 0:26

score 8.4k · Answer 7 · 2026-04-10 04:59:51

8.4k

Views

How many different telephone numbers are possible in city A?

Published on 10 Apr 2026 - 4:59

score 45 · Answer 8 · 2026-04-11 00:41:21

45

Views

Symmetric group is not semiregular

Published on 11 Apr 2026 - 0:41

score 1.2k · Answer 9 · 2026-03-25 20:41:50

1.2k

Views

If $\sigma$ is an odd permutation, explain why $\sigma^2$ is even but $\sigma^{-1}$ is odd.

Published on 25 Mar 2026 - 20:41

score 1.6k · Answer 10 · 2026-04-15 21:43:32

1.6k

Views

Number of odd and even permutation.

Published on 15 Apr 2026 - 21:43

score 44 · Answer 11 · 2026-04-13 16:33:57

44

Views

How to find the number of unique triplets summing to number K?

Published on 13 Apr 2026 - 16:33

score 183 · Answer 12 · 2026-04-09 04:36:51

183

Views

Does every permutation, which is not an $n$-cycle, commute with some transposition?

Published on 09 Apr 2026 - 4:36

score 365 · Answer 13 · 2026-03-26 01:00:31

365

Views

Leibniz formula for determinants and the sign function

Published on 26 Mar 2026 - 1:00

score 265 · Answer 14 · 2026-04-12 16:28:01

265

Views

Need help in dividing a set into different pairs

Published on 12 Apr 2026 - 16:28

score 156 · Answer 15 · 2026-04-15 20:06:46

156

Views

6-key sequences possible in 6x6 grid

Published on 15 Apr 2026 - 20:06

List Question

How many ways to give five different books to three students?

Permutation of first $k$ prime powers as a one-way function?

How many 10-digit numbers whose first four digits match either the next four digits or the last four digits?

Prove that the set of permutations of a finite non-empty set is a group with respect to the composition of functions.

Characterization of $\tau \in S_n$ such that $\sigma:=(1 \space 2)\tau$ commutes with two distinct transpositions

Number of non-shortest paths

How many different telephone numbers are possible in city A?

Symmetric group is not semiregular

If $\sigma$ is an odd permutation, explain why $\sigma^2$ is even but $\sigma^{-1}$ is odd.

Number of odd and even permutation.

How to find the number of unique triplets summing to number K?

Does every permutation, which is not an $n$-cycle, commute with some transposition?

Leibniz formula for determinants and the sign function

Need help in dividing a set into different pairs

6-key sequences possible in 6x6 grid

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