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15
Math.TechQA.Club
2026-05-10 15:01:46
463
Views
What is the probability that the second blue ball is drawn on the eleventh draw?
Published on
10 May 2026 - 15:01
#probability
#combinatorics
#balls-in-bins
110
Views
Sum of $\sum\limits_{k=0}^{n}(-1)^{k-1}k\binom{n}{k}$
Published on
15 Apr 2026 - 22:25
#combinatorics
#summation
#binomial-coefficients
371
Views
Counting permutations after riffle-like card shuffle
Published on
14 Apr 2026 - 7:01
#combinatorics
#permutations
643
Views
How many bit strings of length $8$ have at least a block of at least $4$ contiguous ones?
Published on
14 Apr 2026 - 21:09
#combinatorics
1.4k
Views
Counting ways to place $n$ books on $k$ shelves
Published on
12 Apr 2026 - 6:26
#combinatorics
228
Views
Imagine that there is an infinite grid, within which each box contains an integer
Published on
14 Apr 2026 - 17:12
#combinatorics
85
Views
How many lowercase strings of 8 letters contain the letters x and y?
Published on
14 Apr 2026 - 12:40
#combinatorics
#discrete-mathematics
151
Views
There are four couples to be seated in a row with $8$ seats.
Published on
11 Apr 2026 - 8:59
#combinatorics
#discrete-mathematics
#combinations
648
Views
number of subsets that has no two consecutive elements
Published on
16 Apr 2026 - 6:48
#combinatorics
#discrete-mathematics
34
Views
Is there a closed form exists to count the total number of forests with x number of vertices such that no vertices are adjacent in the orignial graph?
Published on
14 Apr 2026 - 18:11
#combinatorics
1.2k
Views
In how many ways can ten indistinguishable cookies be distributed to four friends with restrictions?
Published on
12 Apr 2026 - 0:39
#combinatorics
#discrete-mathematics
#combinations
65
Views
What is the name of shorting algorithm used?
Published on
10 May 2026 - 12:53
#combinatorics
#algorithms
#sorting
335
Views
A hotel has 6 single rooms, 6 double rooms and 4 rooms in which 3 persons can stay. In how many ways can 30 persons be accommodated in this hotel?
Published on
13 Apr 2026 - 21:13
#combinatorics
#combinations
40
Views
Counting Integer Solution to $\frac{a}{x-a} \in Z, \frac{b}{x-b} \in Z, x \geq 1$ in Sublinear Time
Published on
15 Apr 2026 - 12:33
#combinatorics
#algorithms
#diophantine-equations
55
Views
Logic flaw or not
Published on
12 Apr 2026 - 20:27
#combinatorics
#discrete-mathematics
#permutations
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