有一列数:1,2,3,2,1,2,3,4,3,2,3,4,5,4,3,4,5,6,5,4,5,.这列数中前240个数的和是()谢谢!求算式!
问题描述:
有一列数:1,2,3,2,1,2,3,4,3,2,3,4,5,4,3,4,5,6,5,4,5,.这列数中前240个数的和是()谢谢!求算式!
答
有一列数:1,2,3,2,1,2,3,4,3,2,3,4,5,4,3,4,5,6,5,4,5,.这列数中前240个数的和是()谢谢!求算式!