1个6边形用6根火柴棒,2个6边形用11根火柴棒,n个6边形用多少根火柴棒?
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1个6边形用6根火柴棒,2个6边形用11根火柴棒,n个6边形用多少根火柴棒?
1个6边形用6根火柴棒,2个6边形用11根火柴棒,n个6边形用多少根火柴棒?
1个6边形用6根火柴棒,2个6边形用11根火柴棒,n个6边形用多少根火柴棒?
5n+1
6n-n+1
4n+3 n>1
6 n=1
4n+3 n>1
6 n=1
6n-1
1个6边形用6根火柴棒,2个6边形用11根火柴棒,n个6边形用6n-n+1=5n+1根火柴棒。
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