Please calculate: 72-21-10.

To calculate the expression 72 - 21 - 10, we will perform the subtraction operations step by step.

First, subtract 21 from 72:

$$72 - 21$$

$$72 - 20 = 52$$

$$52 - 1 = 51$$

So, $$72 - 21 = 51$$.

Now, subtract 10 from the result:

$$51 - 10$$

$$51 - 10 = 41$$

Therefore, the final result is 41.