How do you get the number 91 using only five 3's?

In our class we got the numbers 90 - 99. We have to figure out a way to get each of those numbers using only five 3's.
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I can only come up with one way.
To get the tens and hundreds we use 3*3*3=27.
To get the ones (units) we use 3. Combine these: 273.
Then we use the fifth 3 to divide 273/3=91.
by Top Rated User (1.1m points)

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