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标题: 求助涛涛 GWD 1-14 [打印本页]

作者: deezhou 时间: 2006-6-27 08:30
标题: 求助涛涛 GWD 1-14

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.

but i have no idea how to go about solving it. Please hep!!!

thanks

作者: salvador 时间: 2006-6-27 09:04
9×48＋2＋6＝432＋2＋6＝440

作者: yaoyao99 时间: 2006-6-27 09:07

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