3.(333···3)×(666···6) .7=( ) a个3 a个6 本人没分了.

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3.(333···3)×(666···6) .7=( ) a个3 a个6 本人没分了.
3.(333···3)×(666···6) .7=( ) a个3 a个6 本人没分了.

3.(333···3)×(666···6) .7=( ) a个3 a个6 本人没分了.
3.(333···3)×(666···6) .7
=(10/3)*(10^a)*(20/3)
=((2/9)*10^(a+2) )

题目就是(333···3)×(666···6)=()吗?

3.3*6.7=22.11
3.33+66.7=222.111
3.333*666.7=2222.1111
3.(3333...a个3)×﹙6666…a个6).7=(2222…a+1个2).(1111…a+1个1)
ok,欢迎采纳O(∩_∩)O哈!

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