3,5,7,9,11,找规律,第n 个是多少,

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3,5,7,9,11,找规律,第n个是多少,3,5,7,9,11,找规律,第n个是多少,3,5,7,9,11,找规律,第n个是多少,2n+1.2n+1n+2

3,5,7,9,11,找规律,第n 个是多少,
3,5,7,9,11,找规律,第n 个是多少,

3,5,7,9,11,找规律,第n 个是多少,
2n+1 .

2n+1

n+2