6 ,21 ,52 ,105 , ( ),301

2023-06-11

A.172
B.186
C.210
D.224


参考答案:B

6,21,52,105,(186),301
规律是:2*3=6,3*7=21,4*13=52,5*21=105,( ),7*43=301;3,7,13,21,(31),43的差成等差数列。