245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+245+24=多少?
题目
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?
答案
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
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