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... nted between every two willows. How many peach trees are there? This is still a typical tree planting problem, you just need to pay attention to whether to add one or subtract one, got it?" Xu Qingfan stopped writing and turned his head to look at Wu Lingyu.
"I got it, this one requires subtracting one, three trees for two gaps, so twelve trees make eleven gaps, 11×3=33, the answer is 33 trees!" The little girl nodded in answer.
"Great! You’ve got this type of problem down now, r ...
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