摘要:
A cubic number is the result of using a whole number in a multiplication three times. For example, 3×3×3=273×3×3=27 so 2727 is a cubic number. The fir 阅读全文
摘要:
My birthday is coming up and traditionally I'm serving pie. Not just one pie, no, I have a number N of them, of various tastes and of various sizes. F 阅读全文