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标题: [求助]GWD-1-14 [打印本页]

作者: daizexia90 时间: 2006-6-12 13:44 标题: [求助]GWD-1-14

Q14:

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

作者: bettyofarim 时间: 2006-6-13 07:06

10^50=10000000....00000(50个0)

10^50-74=9999999...99926(50-2个9)

所以sum=48*9+2+6=440

作者: daizexia90 时间: 2006-6-18 14:08

thanks !!!!!!!

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