Respuesta :

Total can be arranged in 4! ways .

[tex]\\ \rm\Rrightarrow 4(3)(2)(1)=24ways[/tex]

Cancel out without ones

  • 24-3=21 ways.

The required number of combination is 21. Option c is correct.

Combination of hot dogs with or without ketchup, mustard, relish, or mayo to be determine,

What is permutation?

permutation can be termed combinations can be made through number of events.

Here, we have 4 varieties with hot dog.
Now, combination with or without 4 varieties = 4c1 - 3  

                                                                     = 4*3*2 - 3
                                                                     = 24-3
                                                                     = 1

Thus, the required number of combination is 21.

Learn more about permutation here:
https://brainly.com/question/1216161

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