標題: 關於 Laws of Indices [打印本頁] 作者: anthony 時間: 1/10/2005 07:17 PM 標題: 關於 Laws of Indices 請問以下兩題數如何計？ (a)If one numeral in a certain number takes up 1cm, how many km will all the numerals in the number [(10^6)^10]^5 take up? If it takes 1 second to write a numeral, how many days will it take to write all the numbers in [(10^6)^10]^5?
(b)If the number in (a) is changed to [(-10^6)^(-10)]^5, will the length of the numerals in this number different from that in the number in (a)?
我是這樣計(a)的： The length [(10^6)^10]^5*1cm =10^300*1cm =10^295km 如果用scientific notation表示，答案就是：1*10^295km