Question

Probability: Combination and Permutation in Chess

score 1k · Answer 1 · 2026-03-22 16:02:43

1k

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Probability: Combination and Permutation in Chess

Published on 22 Mar 2026 - 16:02

score 10.5k · Answer 2 · 2018-01-26 12:23:09

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 26 Jan 2018 - 12:23

score 45 · Answer 3 · 2026-03-22 13:39:15

45

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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 22 Mar 2026 - 13:39

score 178 · Answer 4 · 2026-03-25 03:00:48

178

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Product of binomial coefficient and fraction is integer

Published on 25 Mar 2026 - 3:00

score 3.5k · Answer 5 · 2026-03-22 07:10:41

3.5k

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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 22 Mar 2026 - 7:10

score 170 · Answer 6 · 2026-03-20 01:01:22

170

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Valid parentheses of multiple types with given suffix

Published on 20 Mar 2026 - 1:01

score 5.7k · Answer 7 · 2018-01-27 23:07:15

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 27 Jan 2018 - 23:07

score 117 · Answer 8 · 2018-01-28 04:56:38

117

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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 28 Jan 2018 - 4:56

score 501 · Answer 9 · 2018-01-28 08:17:35

501

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

Published on 28 Jan 2018 - 8:17

score 189 · Answer 10 · 2018-01-28 13:38:41

189

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

Published on 28 Jan 2018 - 13:38

score 138 · Answer 11 · 2026-03-17 02:07:33

138

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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 17 Mar 2026 - 2:07

score 334 · Answer 12 · 2026-03-22 16:28:34

334

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How to find permutations of specific sets of data

Published on 22 Mar 2026 - 16:28

score 1.4k · Answer 13 · 2026-03-22 16:42:32

1.4k

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Permutations and combinations – pens of same color

Published on 22 Mar 2026 - 16:42

score 335 · Answer 14 · 2026-03-17 00:36:36

335

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

Published on 17 Mar 2026 - 0:36

score 84 · Answer 15 · 2018-01-30 00:42:49

84

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

Published on 30 Jan 2018 - 0:42

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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