If 5^21 x 4^11=2 x 10^n what is the value of n?
a) 11
b)21
c) 22
d)23
e)32
thx
收錄日期: 2021-04-22 00:50:46
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090624000051KK00911