Problem
COM-B1-M03-P003 Three from Seven
#3
★☆☆☆☆ Level 1 of 5
How many \(3\)-element subsets does a set of \(7\) elements have?
This is \(\binom{7}{3}\).
We get \(\binom{7}{3}=7\cdot6\cdot5/3!=35\).
Basic computational example.