if 1050 -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
Answer is C.
能不能帮忙解释一下,题目是什么意思?看不明白
10^50=1后边有50个0,减去74后差有50个digit,其中最后两位是26,那前边48个digit都是9。
所以是48*9+10=440
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