2 ,4 ,10 ,22 ,42 ,() A. 72B. 84C. 96D. 78
2 ,4 ,10 ,22 ,42 ,()
A. 72
B. 84
C. 96
D. 78
B. 84
C. 96
D. 78
参考解析
解析:这是一个公差为2的三级等差数。故答案为A。
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