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93
it is equal to equal lol:P
There are 9 choices for the first digit, 8 for the second, 7 for the third, and 6 for the last. So there are 9x8x7x6=3024 "permutations" That means the order does matter. If the order does not matter, divide that number by 4!=4x3x2x1 9C4 is 126
Yes. If equals are added to equals, then the results of the additions are equal.
it equals 4c