Question

The number of ways of selecting 10 objects from 30 objects, of which 10 are alike and the rest are all different is?

score 2.1k · Answer 1 · 2019-01-05 05:04:51

2.1k

Views

The number of ways of selecting 10 objects from 30 objects, of which 10 are alike and the rest are all different is?

Published on 05 Jan 2019 - 5:04

score 115 · Answer 2 · 2026-03-25 11:13:34

115

Views

which one is worse in terms of probability

Published on 25 Mar 2026 - 11:13

score 208 · Answer 3 · 2026-03-27 04:16:59

208

Views

Approximating $\sum\limits_{r\subset S}|r|!\prod\limits_{x\in r}x$

Published on 27 Mar 2026 - 4:16

score 233 · Answer 4 · 2019-01-06 16:43:08

233

Views

Finding combinations with groups.

Published on 06 Jan 2019 - 16:43

score 168 · Answer 5 · 2026-03-26 04:12:42

168

Views

generalization of Dyck Path: size K upward steps

Published on 26 Mar 2026 - 4:12

score 531 · Answer 6 · 2026-03-25 07:45:41

531

Views

A formula for the number of possible combinations of a $i\times j$ rectangle in a $m\times n$ grid such that they don't overlap?

Published on 25 Mar 2026 - 7:45

score 31 · Answer 7 · 2019-01-09 13:37:22

31

Views

Number of subset elements

Published on 09 Jan 2019 - 13:37

score 3.1k · Answer 8 · 2019-01-09 22:19:58

3.1k

Views

The total number of subsets is $2^n$ for $n$ elements

Published on 09 Jan 2019 - 22:19

score 60 · Answer 9 · 2026-03-25 13:55:38

60

Views

How to make any natural numbers (placed in the chessboard cells) divisible by 10 by using the given tools

Published on 25 Mar 2026 - 13:55

score 58 · Answer 10 · 2019-01-10 12:18:13

58

Views

Generalise to any dimension some notation

Published on 10 Jan 2019 - 12:18

score 33 · Answer 11 · 2019-01-10 13:14:15

33

Views

The exact logic of multiplication rule of independence used in the problem of balls in the urn problem

Published on 10 Jan 2019 - 13:14

score 228 · Answer 12 · 2026-03-28 00:16:59

228

Views

How many integer r-tuples are there such that sum of the absolute values of their entries is less than or equal to n.

Published on 28 Mar 2026 - 0:16

score 253 · Answer 13 · 2019-01-11 07:26:13

253

Views

Closed-form for finding the number of paths on an nxm board

Published on 11 Jan 2019 - 7:26

score 423 · Answer 14 · 2019-01-11 15:52:21

423

Views

Number of Combinations of Items from Sets with Dependencies

Published on 11 Jan 2019 - 15:52

score 150 · Answer 15 · 2019-01-11 20:04:04

150

Views

Find a general solution for this recurrence: $a_n = \sqrt{a_{n-1}a_{n-2}}$

Published on 11 Jan 2019 - 20:04

List Question

The number of ways of selecting 10 objects from 30 objects, of which 10 are alike and the rest are all different is?

which one is worse in terms of probability

Approximating $\sum\limits_{r\subset S}|r|!\prod\limits_{x\in r}x$

Finding combinations with groups.

generalization of Dyck Path: size K upward steps

A formula for the number of possible combinations of a $i\times j$ rectangle in a $m\times n$ grid such that they don't overlap?

Number of subset elements

The total number of subsets is $2^n$ for $n$ elements

How to make any natural numbers (placed in the chessboard cells) divisible by 10 by using the given tools

Generalise to any dimension some notation

The exact logic of multiplication rule of independence used in the problem of balls in the urn problem

How many integer r-tuples are there such that sum of the absolute values of their entries is less than or equal to n.

Closed-form for finding the number of paths on an nxm board

Number of Combinations of Items from Sets with Dependencies

Find a general solution for this recurrence: $a_n = \sqrt{a_{n-1}a_{n-2}}$

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