Question
Valen folded 11 paper guns on the first day. Each day he did 2 more paper guns than the previous day. On the last day, he made 27 guns. How many days did he fold paper guns?
2 m

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Valen folded 11 paper guns on the first day. Each day he did 2 more paper guns than the previous day. On the last day, he made 27 guns. How many days did he fold paper guns?