Question

A "half-iterate" of the Faulhaber-problem of "summing like powers"?

score 307 · Answer 1 · 2026-03-25 16:02:53

307

Views

A "half-iterate" of the Faulhaber-problem of "summing like powers"?

Published on 25 Mar 2026 - 16:02

score 93 · Answer 2 · 2026-03-25 16:00:16

93

Views

An interesting extension of a combinatorics problem

Published on 25 Mar 2026 - 16:00

score 335 · Answer 3 · 2018-04-07 14:11:19

335

Views

On average, what percentage of 6-digit licence plates contain the numbers '7' or '8'?

Published on 07 Apr 2018 - 14:11

score 418 · Answer 4 · 2026-03-26 00:58:51

418

Views

Counting r-combination with generating functions logic

Published on 26 Mar 2026 - 0:58

score 140 · Answer 5 · 2018-04-07 19:40:11

140

Views

$n$ girls and $n$ boys are sitting around a table. We choose one. Let $X$ be the number of girl neighbours . What is $E(X)$?

Published on 07 Apr 2018 - 19:40

score 50 · Answer 6 · 2026-03-28 12:02:24

50

Views

Number of ways of minimum path

Published on 28 Mar 2026 - 12:02

score 346 · Answer 7 · 2018-04-08 11:16:46

346

Views

10 topics, 5 exam questions, what is the probability 2 topics show up?

Published on 08 Apr 2018 - 11:16

score 284 · Answer 8 · 2026-03-25 01:24:48

284

Views

Recurrence relation from Generating function - how to find recurrence relation??

Published on 25 Mar 2026 - 1:24

score 79 · Answer 9 · 2018-04-08 15:02:56

79

Views

Why this is wrong

Published on 08 Apr 2018 - 15:02

score 264 · Answer 10 · 2026-03-25 01:31:12

264

Views

Number of ways to gain $10$ points while gaining conditional $1$, $2$, or $3$ points at a time?

Published on 25 Mar 2026 - 1:31

score 276 · Answer 11 · 2018-04-08 15:24:40

276

Views

Lattice Path Enumeration

Published on 08 Apr 2018 - 15:24

score 203 · Answer 12 · 2018-04-08 15:32:54

203

Views

Count the number of subsets of a set whose intersect with another set

Published on 08 Apr 2018 - 15:32

score 567 · Answer 13 · 2026-03-25 23:58:42

567

Views

Number of $6$-digit numbers made up of the digits $1$, $2$, and $3$ with no digit occurring $3$ or more times consecutively?

Published on 25 Mar 2026 - 23:58

score 202 · Answer 14 · 2026-04-04 03:53:25

202

Views

How many 6-letter strings contain neither the word 'bob' nor 'tim'

Published on 04 Apr 2026 - 3:53

score 50 · Answer 15 · 2018-04-08 23:03:42

50

Views

Fib. sequences/ Combintorics

Published on 08 Apr 2018 - 23:03

List Question

A "half-iterate" of the Faulhaber-problem of "summing like powers"?

An interesting extension of a combinatorics problem

On average, what percentage of 6-digit licence plates contain the numbers '7' or '8'?

Counting r-combination with generating functions logic

$n$ girls and $n$ boys are sitting around a table. We choose one. Let $X$ be the number of girl neighbours . What is $E(X)$?

Number of ways of minimum path

10 topics, 5 exam questions, what is the probability 2 topics show up?

Recurrence relation from Generating function - how to find recurrence relation??

Why this is wrong

Number of ways to gain $10$ points while gaining conditional $1$, $2$, or $3$ points at a time?

Lattice Path Enumeration

Count the number of subsets of a set whose intersect with another set

Number of $6$-digit numbers made up of the digits $1$, $2$, and $3$ with no digit occurring $3$ or more times consecutively?

How many 6-letter strings contain neither the word 'bob' nor 'tim'

Fib. sequences/ Combintorics

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