You are given a series of numbers. Your task is to see how they form a relationship with each other. You have to choose the numb

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问题 You are given a series of numbers. Your task is to see how they form a relationship with each other. You have to choose the number that would go next in the series.
                           1, 3, 6, 10

选项

答案15

解析 (1+2=3;3+3=6;6+4=10;10+5=15;第二个加数从2依此递增得到下一个序列值。)
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