Since my birth I have had a birthday cake with candles, one for each year of my

游客2023-10-14 39

问题 Since my birth I have had a birthday cake with candles, one for each year of my birthdays. To date, I have had 325 candles. How old am I?

选项

答案 25

解析假设当前年龄是n，则此时需要的蜡烛的总数为n(n+1)／2=325，可以解得n=25．

转载请注明原文地址:http://tihaiku.com/zcyy/3095981.html

相关试题推荐

随机试题

最新回复(0)

Howoldwouldapersonbornin50BCbeontheirbirthdayin50AD?99