20 + [(21+23)/22]2 = 20 + [44/22]2 = 20 + 22 = 20 + 4 = 24
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Impossible, as there are not enough numbers to cover all squares.
One example. 12*8+3+7-6 = 100 The key is finding sets of 10s
If you must use all digits precisely once then the answer is: 8642, 8624, 8462
There are 210 of them, and I regret that I do not have the time to list them all.
To get 1000 using the numbers 1, 2, 3, and 4 only once in an equation, you can use the following mathematical expression: (4 x 2 x 3 x 1) x (4 + 2 + 3 + 1) = 1000. This equation involves multiplication and addition operations using all four numbers exactly once to achieve the desired result of 1000.