Question

数列找规律问题设数列 {1,4,9,16,25,x,y} 满足一定规律,y不等于49,问x的解答有几组?请全部列出.

Answer 1

{1,4,9,16,25,x,y}

1 (8) 9 (16) 25 53

4 16 28

{1,4,9,16,25,x,y}

1 (8) 9 (16) 25 61

4 16 36

{1,4,9,16,25,x,y}

1 (8) 9 (16) 25 89

4 16 64