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5,8,13,21,34,() A.45B.50C.55D.60
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3,2,4,5,16,()A.45B.55 C.65D.75
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3,2,4,5,16,()A.45B.55 C.65D.75
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21, 28, 33, 42, 43, 60, ().A.45B.56C.75 D.92
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21, 28, 33, 42, 43, 60, ().A.45B.56C.75 D.92
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1/9,(),1/126A.1/55B.1/54C.1/65D.1/75
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菲波纳奇数列:1 1 2 3 5 8 13 21 34 () 89.A 45B 47 C 5