问题
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4,6,5,7,7,9,11,13,19,21,() A. 27,29 B. 32,33 C. 35,37 D.41,43
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4,6,5,7,7,9,11,13,19,21,(),() A.27,29 B.32,33 C.35,37 D.41,43
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1.11, 2.23, 3.35,4.47, (), 6.71。 A.5.57B.5.58C.5.59 D.5.60
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5,6,10,19,35,()。 A.60B.61C.62D.63
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4,5,8,10,16,19,32,()A.35B.36C.37D.38
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(3/4+1/5)+(4/5+1/6)+(5/6+1/7)+(6/7+1/8)+(7/8+1/9)+(8/9+1/10)=()。A.6.05B.5.65C.5.35D.5.05