What type of counting problem is this? Johnny is a very picky eater, so he likes to use a lot of condiments. He has ketchup, salt, pepper, and shredded cheese at his disposal. His mother tells him he may only make two additions to his meal (i. e., he can add condiments only twice, regardless of whether or not he already used them). How many different ways can Johnny improve his meal?

duplicate counting

Step-by-step explanation:

this might be wrong since different states have diff cirriculums

pls mark brainliest

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this