Respuesta :
Total combinations are the number of pastas x the number of sauces:
5 x 4 = 20 different choices.
For it not to be tomato’s spaghetti you would have 19 choices it could be ( 20 total - 1(tomato spaghetti) = 19
The probability of being something other than tomato spaghetti would be 19/20
The answer is 19/20