5, 7, 24, 62, ( ), 468A.94 B.145 C.172

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问题 5, 7, 24, 62, ( ), 468A.94B.145C.172D.236

选项 A.94
B.145
C.172
D.236

答案 C

解析 本题的规律是5+7=12,12×2=24,7+24=31,31×2=62,24+62=86,86× 2=172,因此为172。故选C。
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