I am thinking of a mathematical expression.

The expression is an integer raised to an integer power.

There are three digits used in the expression.

When I evaluated the expression I get a three digit number.

The three digits in the expression are the same as the three digits in the answer though not in the same order.

What expression am I thinking of?

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There are a number of possible answers. Here are some:

11^{2}

5^{2+1}

6^{2+1}

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