關於 Laws of Indices

anthony

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

但是，我看過書中的答案，它印的答案是6km及7日。請問我上述的計算方法是否有出錯？

JOHNLAM17

我認為有錯
因為佢(a)題係問有幾多個位,唔係個數值
eg. 1*10^6數值=1,000,000, 而有7個位