Python .comb()

In Python, the .comb() function from the math module calculates the number of ways to choose k items from n items without regard to order or repetition.

Syntax

math.comb(n, k)

• n: A non-negative integer that represents the total number of items.
• k: A non-negative integer that represents the number of items to choose.

The result returned is a non-negative integer representing the number of unordered choices that can be made to select k items from n items.

Example

The following example shows the use of the .comb() function:

import math

n = 10
k = 4

no_of_choices = math.comb(n,k)
print("Total ways to choose: ", no_of_choices)

Copy to clipboard
Copy to clipboard

This bit of code gives out the following output:

Total ways to choose: 210

Copy to clipboard
Copy to clipboard

Codebyte Example

The below codebyte example uses the .comb() function in order to find out in how many ways can someone choose k number of flowers from n number of flowers:

Visit us
Visit us
Hide code
Code
Output
Hide output
Copy to your clipboard
Copy Codebyte
Run