Question 1140746
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We can't determine the number of ICE CREAM AND topping combinations if you don't tell us how many kinds of ice cream there are....<br>
As for the number of combinations of at most 4 TOPPINGS, that number is<br>
(10 choose 0) + (10 choose 1) + (10 choose 2) + (10 choose 3) + (10 choose 4)<br>
Use a calculator if needed....