Question

由数列1,10,100,1 000,…,猜测该数列的第n项可能是(    )

A.10ⁿ               B.10^n-1               C.10ⁿ⁺¹              D.11ⁿ

Answer 1

解析:1=10^1-1,10=10^2-1,100=10^3-1,1 000=10^4-1,故选B.

答案:B