BirkhoffLee@tg => YSITD: 1^2^3 = 1^(2^3) = (1^2)^3 不是嗎 #5748680a75e9510b040b41ad

BirkhoffLee@tg says to YSITD

1^2^3 = 1^(2^3) = (1^2)^3 不是嗎

at Fri, May 27, 2016 11:30 PM