The number of ways to make $20$ out of coins of given value
12926
number of ways to make $2.00
66384
Probability of substring inside string of coin-tosses
1381
Random coin toss; toss 10 coins; repeat 100 times
53655
Ways of getting a number with $n$ dice, each with $k$ sides
50594
Finite bit strings that do not contain '$00$'
65843
Number of possible combinations of x numbers that sum to y
65070
Combinations of a penny, nickel, dime, and quarter
15725
$2017$ as the sum of two squares
92772
How many different sets of $6$ different numbers can we construct from $11, 13, 18, 19, 19, 20, 23, 25$?
101664
In how many different ways can you split $10$ people into two groups of $5$ people?
34616
Number of ways of distributing balls into boxes
136449
Combinatorics problem on $20$ people, $12$ months, and distinguishable groups
19936
Coin Tossing Game Optimal Strategy
140433
The number of ways of writing an integer as a sum of two squares
22454
How many combinations can I make?
53670
Prove that it is possible to choose $100$ out of the first $200$ positive integers
6139
How to choose between two options with a biased coin