國家公務(wù)員數(shù)字推理習(xí)題精解(78)

字號:


    【例題】64,48,36,27,814,( )
    A.976               B.12338             C.17912             D.24316
    【例題】2,3,10,15,26,( )
    A. 32               B. 35               C.38                D.42
    【例題】39,62,91,126,149,178,( )
    A. 205              B.213               C. 221              D.226
    【例題】32,48,40,44,42,( )
    A. 43               B. 45               C. 47               D.49
    【例題】1,8,20,42,79,( )
    A.126               B.128               C.132               D.136
    【解析】D。典型等比數(shù)列,公比為3/4。
    【解析】B。平方數(shù)列變式,各數(shù)分別為12+1,22-1,32+1,42-1,52+1,62-1
    【解析】B。二級等差數(shù)列,相鄰兩項的差為23,29,35,23,29,(35)
    【解析】A。二級等差數(shù)列變式,相鄰兩項的差為等比數(shù)列16,-8,4,-2,(1)
    【解析】D。三級等差數(shù)列,相鄰兩項的差為7,12,22,37,(57)
    
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