1.99999+1.9999+1.999+1.99+1.9快来帮我!

问题描述:

1.99999+1.9999+1.999+1.99+1.9
快来帮我!

......- -!!!!
某位伟人曾发明过计算器这种伟大的东西!!!!!

9。88889

1.99999+1.9999+1.999+1.99+1.9
=2-0.00001+2-0.0001+2-0.001+2-0.01+2-0.1
=10-0.11111
=9.88889