【例题】4,12,40,112,353,()
A.625 B.784 C.832 D.996
【例题】1,5,11,20,34,56,()
A.68 B.71 C.82 D.91
【例题】-215,15,-7,-1,9,()
A.5 B.12 C.15 D.17
【例题】-2,4,-8,-4,32,28,()
A.-464 B.896 C.664 D.148
【例题】99,567,864,1089,1755,()
A.2686 B.2754 C.2869 D.3042
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