about maths 10points

63,64

∵In binary numbers,the numbers are represent in the follow way:
2^0=1,2^1=10,2^2=100,2^3=1000,etc.
∴If the digits of thebinary no.of the sum of their ages are 1,
the sum of their ages =(2^n)-1
∴Their ages are 2^(n-1) and 2^(n-1)+1 respectively
extra:
As they are an "old" couple,n should be greater than 6 & because few people can live over 100 years,
∴Their ages are 64 and 65 respectively(most probably)

2007-11-03 18:25:00 補充：
這個才對：∴Their ages are 2^(n-1) and 2^(n-1)-1 respectivelyextra:As they are an old couple,n should be greater than 6 & because few people can live over 100 years,∴Their ages are 64 and 63 respectively(most probably)

2007-11-05 12:34:05 補充：
其實這提沒有標准答案，只是因為他們是一對‘old couple’，所以才猜測應該是63和64歲。（所以其實extra那段沒甚麼意義，因為只是猜測，不夠嚴謹）

2007-11-05 12:34:37 補充：
打錯字，是題不是提

2007-11-09 17:42:16 補充：
發問者說...是甚麼意思？

63,64