Question

Probability: Combination and Permutation in Chess

score 1k · Answer 1 · 2026-04-15 14:54:35

1k

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Probability: Combination and Permutation in Chess

Published on 15 Apr 2026 - 14:54

score 10.5k · Answer 2 · 2026-04-14 07:44:08

10.5k

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The number of ways in which one can choose three distinct numbers from the set so that the product of the chosen numbers is divisible by $9$

Published on 14 Apr 2026 - 7:44

score 56 · Answer 3 · 2026-05-10 10:36:01

56

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How many 3 digits numbers are equal to the sum of their first digit plus their second digit squared plus the third cubed?

Published on 10 May 2026 - 10:36

score 182 · Answer 4 · 2026-05-10 13:48:31

182

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Product of binomial coefficient and fraction is integer

Published on 10 May 2026 - 13:48

score 3.6k · Answer 5 · 2026-05-06 08:29:01

3.6k

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Number of positive integral solutions of $a+b+c+d+e=20$ such that $a<b<c<d<e$ and $(a,b,c,d,e)$ is distinct

Published on 06 May 2026 - 8:29

score 181 · Answer 6 · 2026-05-07 11:29:28

181

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Valid parentheses of multiple types with given suffix

Published on 07 May 2026 - 11:29

score 5.7k · Answer 7 · 2026-04-17 05:54:32

5.7k

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How many ways are there to make a sundae with two toppings if double toppings are allowed?

Published on 17 Apr 2026 - 5:54

score 120 · Answer 8 · 2026-04-14 16:40:32

120

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How many linear arrangements of $5$ A's , $3$ B's , $2$ C's are there with the first $A$ occurring before the first $B$?

Published on 14 Apr 2026 - 16:40

score 504 · Answer 9 · 2026-04-16 16:42:33

504

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How many nondecreasing functions $f: \{1, 2, 3, \ldots, 15\} \to \{1, 2, 3, 4, 5\}$ are there?

Published on 16 Apr 2026 - 16:42

score 192 · Answer 10 · 2026-04-15 14:42:34

192

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Number of ways of selecting 3 numbers from a set in a given condition

Published on 15 Apr 2026 - 14:42

score 146 · Answer 11 · 2026-05-05 04:11:47

146

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Combinatorics question: Suppose you play a game of cards in which only 5 cards are dealt from a standard 52 deck....

Published on 05 May 2026 - 4:11

score 337 · Answer 12 · 2026-04-11 05:03:34

337

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How to find permutations of specific sets of data

Published on 11 Apr 2026 - 5:03

score 1.4k · Answer 13 · 2026-04-13 02:06:46

1.4k

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Permutations and combinations – pens of same color

Published on 13 Apr 2026 - 2:06

score 340 · Answer 14 · 2026-04-23 01:24:08

340

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Putting $n$ balls in $m$ boxes and in each box is even number of balls

Published on 23 Apr 2026 - 1:24

score 87 · Answer 15 · 2026-04-16 08:28:01

87

Views

All combinations and number of permutions of each combination with three kinds of items

Published on 16 Apr 2026 - 8:28

List Question

Probability: Combination and Permutation in Chess

The number of ways in which one can choose three distinct numbers from the set so that the product of the chosen numbers is divisible by $9$

How many 3 digits numbers are equal to the sum of their first digit plus their second digit squared plus the third cubed?

Product of binomial coefficient and fraction is integer

Number of positive integral solutions of $a+b+c+d+e=20$ such that $a<b<c<d<e$ and $(a,b,c,d,e)$ is distinct

Valid parentheses of multiple types with given suffix

How many ways are there to make a sundae with two toppings if double toppings are allowed?

How many linear arrangements of $5$ A's , $3$ B's , $2$ C's are there with the first $A$ occurring before the first $B$?

How many nondecreasing functions $f: \{1, 2, 3, \ldots, 15\} \to \{1, 2, 3, 4, 5\}$ are there?

Number of ways of selecting 3 numbers from a set in a given condition

Combinatorics question: Suppose you play a game of cards in which only 5 cards are dealt from a standard 52 deck....

How to find permutations of specific sets of data

Permutations and combinations – pens of same color

Putting $n$ balls in $m$ boxes and in each box is even number of balls

All combinations and number of permutions of each combination with three kinds of items

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