问几道数字推理题目 (请说明做法) 19,7,23,47,31,( )A.14 B.44 C.57 D.6132 ,712 ,1130 ,1556 ,( )A.1772 B.1964 C.1990 D.23121 —7,3,4,( ),11A.—6 B.7 C.10 D.132,3,6,9,17,( )A.33 B.27 C.45 D.19

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问几道数字推理题目 (请说明做法) 19,7,23,47,31,( )A.14 B.44 C.57 D.6132 ,712 ,1130 ,1556 ,( )A.1772 B.1964 C.1990 D.23121 —7,3,4,( ),11A.—6 B.7 C.10 D.132,3,6,9,17,( )A.33 B.27 C.45 D.19

问几道数字推理题目 (请说明做法) 19,7,23,47,31,( )A.14 B.44 C.57 D.6132 ,712 ,1130 ,1556 ,( )A.1772 B.1964 C.1990 D.23121 —7,3,4,( ),11A.—6 B.7 C.10 D.132,3,6,9,17,( )A.33 B.27 C.45 D.19
问几道数字推理题目 (请说明做法)
19,7,23,47,31,( )
A.14 B.44 C.57 D.61
32 ,712 ,1130 ,1556 ,( )
A.1772 B.1964 C.1990 D.23121
—7,3,4,( ),11
A.—6 B.7 C.10 D.13
2,3,6,9,17,( )
A.33 B.27 C.45 D.19

问几道数字推理题目 (请说明做法) 19,7,23,47,31,( )A.14 B.44 C.57 D.6132 ,712 ,1130 ,1556 ,( )A.1772 B.1964 C.1990 D.23121 —7,3,4,( ),11A.—6 B.7 C.10 D.132,3,6,9,17,( )A.33 B.27 C.45 D.19
19,7,23,47,31,( 61)
全是质数
32 ,712 ,1130 ,1556 ,( 1990)
每个数分成两部分
3|2 ,7|12 ,11|30 ,15|56,19|90
每个数的两部分分别成一组数列
3,7,11,15,19成等差,公差是4,
2,12,30,56,90成二级等差
也可以这么看
相邻两个数相加
和成数列
5,9,15,26,?
其中15=5+9+1
26=9+15+2
所以?=15+26+3=44
所以括号内的数等于44-17=27
—7,3,4,(7 ),11
两数和的绝对值等于第三个数
2,3,6,9,17,(27 )
2+3+6=11
3+6+9=18
6+9+17=32
9+17+27=53
观察数列11,18,32,53
18-11=7,32-18=14,53-32=21