Two 4-sided dice are tossed 10 times and the sum of the "down" faces is noted. What is the probability that the sum of 4 occurs at most two times? Leave your answer as a percent rounded to one decimal place. Provide evidence of your work by typing out your full solution

Two 4-sided dice are tossed 10 times and the sum of the "down" faces is noted. What is the expected number of times a sum of three should occur? Provide evidence of your work by typing out your full solution.

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