Using the combination formula, and considering that the list has 6 ingredients, it is found that 20 groups of 3 different ingredients can go on a taco.
The order in which the ingredients are chosen is not important, hence, the combination formula is used to solve this question.
[tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by:
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
In this problem, 3 ingredients are chosen from a set of 6, hence:
[tex]C_{6,3} = \frac{6!}{3!3!} = 20[/tex]
20 groups of 3 different ingredients can go on a taco.
To learn more about the combination formula, you can take a look at https://brainly.com/question/25990169
