天山6-14

meimei5656

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？

linlin2008

10平方有3位,10的50次方有51位,所以应该是48个9+2+6=440

meimei5656

thanks  !!!!!!![em08]