(0.0777……+0.0232323……)×0.22222……×99/100
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![(0.0777……+0.0232323……)×0.22222……×99/100](/uploads/image/z/12057919-7-9.jpg?t=%EF%BC%880.0777%E2%80%A6%E2%80%A6%2B0.0232323%E2%80%A6%E2%80%A6%EF%BC%89%C3%970.22222%E2%80%A6%E2%80%A6%C3%9799%2F100)
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(0.0777……+0.0232323……)×0.22222……×99/100
(0.0777……+0.0232323……)×0.22222……×99/100
(0.0777……+0.0232323……)×0.22222……×99/100
(0.0777……+0.0232323……)×0.22222……×99/100
=(7/90+23/990)×2/9×99/100
=10/99×11/50
=1/45
今天感觉头晕