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Best Answer

Assuming that you can only use each number once and that you can use any function the solution is the following:

Step 1

9-1 & 2+1

(This uses all 4 numbers and leaves you with 8 & 3)

Step 2

8*3 = 24

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14y ago
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Q: How do you make 24 using the numbers 9 2 1 and 1?
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