• 2022-06-01 问题

    a<sub>l</sub>,a<sub>2</sub>,a<sub>3</sub>,a<sub>4</sub>,a<sub>s</sub>,….,a<sub>n</sub><br/>Inthesequenceofpositiveintegersabove,a<sub>l</sub>=a<sub>2</sub>=1,a<sub>3</sub>=2,a<sub>4</sub>=3,anda<sub>s</sub>=5.Ifeachtermafterthesecondisobtainedbyaddingthetwotermsthatcomebeforeitandifa<sub>n</sub>=55,whatisthevalueofn? A: 12 B: 10 C: 9 D: 8 E: 5

    a<sub>l</sub>,a<sub>2</sub>,a<sub>3</sub>,a<sub>4</sub>,a<sub>s</sub>,….,a<sub>n</sub><br/>Inthesequenceofpositiveintegersabove,a<sub>l</sub>=a<sub>2</sub>=1,a<sub>3</sub>=2,a<sub>4</sub>=3,anda<sub>s</sub>=5.Ifeachtermafterthesecondisobtainedbyaddingthetwotermsthatcomebeforeitandifa<sub>n</sub>=55,whatisthevalueofn? A: 12 B: 10 C: 9 D: 8 E: 5

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