81,27,9,(),(),()

问题描述:

81,27,9,(),(),()

是等比数列.
243÷3 = 81
81÷3 = 27
27÷3 = 9
9÷3 = 3
3÷3 = 1
1÷3 = 1/3
因此,括号里填:
243,81,27,9,(3),(1),(1/3).