If 10 50– 74 is written as an integer in base 10 notation, what is the sum of the digits in
that integer?
A. 424
B. 433
C. 440
D. 449
E 467
这道题我是这样考虑的,10 50– 74 是47个9 + 2+6=431
请问我错在哪了?
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