7,14,33,70,131,( )A.264 B.222 C.230 D.623

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问题 7,14,33,70,131,( )

选项 A.264
B.222
C.230
D.623

答案B

解析作差7 19 37 61,再作差12 18 24 30,30+61=91,91+131=222
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