Seven segments display

Electronic devices sometimes use the type of digits below, where each digit uses some short stripes. For example, seven uses three small stripes. What is the largest three-digit number that you can make if you use twenty stripes?

Final Answer:

n =  988

Step-by-step explanation:

$$\begin{gathered} 0\dots 6s \\ 1\dots 2s \\ 2\dots 5s \\ 3\dots 5s \\ 4\dots 4s \\ 5\dots 5s \\ 6\dots 6s \\ 7\dots 3s \\ 8\dots 7s \\ 9\dots 6s \\ 20=6+7+7 \\ n=988 \end{gathered}$$

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