108【例题】5/3,5/4,17/15,13/12,37/35,( )A.25/24 B.13/12 C.13/23 D.25/23106【例题】1,2,3,7,46,( )A.2109 B.1289 C.322 D.147105【例题】1,( )A.4 B.6 C.10 D.12

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108【例题】5/3,5/4,17/15,13/12,37/35,( )A.25/24 B.13/12 C.13/23 D.25/23106【例题】1,2,3,7,46,( )A.2109 B.1289 C.322 D.147105【例题】1,( )A.4 B.6 C.10 D.12

108【例题】5/3,5/4,17/15,13/12,37/35,( )A.25/24 B.13/12 C.13/23 D.25/23106【例题】1,2,3,7,46,( )A.2109 B.1289 C.322 D.147105【例题】1,( )A.4 B.6 C.10 D.12
108【例题】5/3,5/4,17/15,13/12,37/35,( )
A.25/24 B.13/12 C.13/23 D.25/23
106【例题】1,2,3,7,46,( )
A.2109 B.1289 C.322 D.147
105【例题】1,( )
A.4 B.6 C.10 D.12

108【例题】5/3,5/4,17/15,13/12,37/35,( )A.25/24 B.13/12 C.13/23 D.25/23106【例题】1,2,3,7,46,( )A.2109 B.1289 C.322 D.147105【例题】1,( )A.4 B.6 C.10 D.12
【例题】5/3,5/4,17/15,13/12,37/35可变为
5/3,10/8,17/15,26/24,37/35可看出分子总比分母大2,
再分析分母3,8,15,24,35之间分别相差5,7,9,11(等差数列)
所以下个数的分母为35+13=48,则()应添50/48约分为25/24
答案为A
【例题】1,2,3,7,46
3=2的平方-1
7=3的平方-2
46=7的平方-3
()=46的平方-7
所以答案为2109选A
【例题】1,1,2,3,4,7,( )
前一项加后一项得2,3,5,7,11为质数列下一个为13
13-7=6所括号里添6
答案为B