x=111...1222...2333...3444...4555...5666...6777...7888...89
1,2,3,4,5,6,7各100个
8有99个,9有一个.是个800位数.
观察下列式子:
9*12345679=111111111
99*1122334455667789=111111111111111111
999*111222333444555666777889=111111111111111111111111111
……
x=111...1222...2333...3444...4555...5666...6777...7888...89
1,2,3,4,5,6,7各100个
8有99个,9有一个.是个800位数.
观察下列式子:
9*12345679=111111111
99*1122334455667789=111111111111111111
999*111222333444555666777889=111111111111111111111111111
……