245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+
来源:学生作业帮 编辑:搜狗做题网作业帮 分类:综合作业 时间:2024/08/06 21:15:49
245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+24=多少?
有一列数“2,4,,5,,2,,4,5,,2,4,,5 · · · · · · · · ·”照这样排下去,第60个数是多少?这60个的和是多少?
有一列数“2,4,,5,,2,,4,5,,2,4,,5 · · · · · · · · ·”照这样排下去,第60个数是多少?这60个的和是多少?
![245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+](/uploads/image/z/18554477-5-7.jpg?t=245%2B245%2B245%2B245%2B245%2B245%2B245%2B245%2B245%2B245%2B245%2B245%2B245%2B245%2B245%2B)
245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+24
=245×19+24
=4655+24
=4679
=245×19+24
=4655+24
=4679