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数学
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3 15 35 63 99 ( ) 195 找规律填数,
3 15 35 63 99 ( ) 195
人气:214 ℃ 时间:2019-08-22 18:48:32
解答
1431×3=3
3×5=15
5×7=35
7×9=63
9×11=99
11×13=143
13×15=195
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