NO.one 133/57,119/51,91/39,49/21,(),7/3 A.28/12,B.21/14,C.28/9,D.31/15NO.two 1,2,6,15,31,() A.53,B.56,C.62,D.87 thank you

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NO.one 133/57,119/51,91/39,49/21,(),7/3 A.28/12,B.21/14,C.28/9,D.31/15NO.two 1,2,6,15,31,() A.53,B.56,C.62,D.87 thank you
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NO.one 133/57,119/51,91/39,49/21,(),7/3 A.28/12,B.21/14,C.28/9,D.31/15NO.two 1,2,6,15,31,() A.53,B.56,C.62,D.87 thank you
NO.one 133/57,119/51,91/39,49/21,(),7/3 A.28/12,B.21/14,C.28/9,D.31/15NO.two 1,2,6,15,31,() A.53,B.56,C.62,D.87 thank you

NO.one 133/57,119/51,91/39,49/21,(),7/3 A.28/12,B.21/14,C.28/9,D.31/15NO.two 1,2,6,15,31,() A.53,B.56,C.62,D.87 thank you
No.1 分母差数列6,12,18,24.故下一数应为21-24=-3 分子差数列14,28,42,56.故下一数应为49-56=-7 故答案为(-7)/(-3)=7/3=28/12,即A."