If 1050 - 74 is written as an integer in base 10 notation, what is the sum of the digits in that integer?
424
433
440
449
467
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找规律 10^3 = 1000 - 74 = 926 10^4 = 10000-74 = 9926 10^5 = 100000 - 74 = 99926 规律：50-2=48个9和26 所以： 48*9+2+6 = 432 + 2 + 6 = 440
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找规律
10^3 = 1000 - 74 = 926
10^4 = 10000-74 = 9926
10^5 = 100000 - 74 = 99926
规律：50-2=48个9和26
所以：
48*9+2+6
= 432 + 2 + 6
= 440
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