How to choose 5 random rows from an array of 8 rows for 10 times and save the 10 results

Hi suppose I have an array of 8 rows as below:

I wish to choose 5 random rows 10 times

Suppose 6,4,8,7,2 is the first random result, how do I save row 6,4,8,7,2 as a input result so that I do not have a different first result if I wish to run the program next time again. And similarly apply it for the rest of the 9 results.

Answer 1

[J. Alex Lee]

if order doesn't matter (6,4,8,7,2 is the same as 4,6,8,7,2)

doc nchoosek

if order does matter (6,4,8,7,2 is different from 4,6,8,7,2)

doc perms

[tinkiewinkie]

i tried nchoosek(1:8,5) and it gave me the combination of all possible 56 combination. How do I choose 10 random combination and saved it as a fixed result?

[J. Alex Lee]

NumRows = 10
rowindices = randperm(nchoosek(8,5),NumRows)