Very,very nice chanuka riddle !! See the next mail for the solution but try first!! 
Ulpan-Or
Hebrew at the Speed of Light
  
 December 28th, 2008  Dear Harold jitschak,  Today we will be lighting the last for this holiday – eighth Chanukah candle and we would like to thank all our students and friends for their active participation in solving our Chanukah riddle.

Here it is again:

In the Talmud Beit Hillel and Beit Shamai argue about the sequence of candle lighting.

Beit Shamai’s opinion is: to start on the first day with eight candles and diminish the count every day ending on the last – eighth day with one candle.

Beit Hillels’s opinion is: to start on the first day with one candle and increase the count every day ending on the last – eighth day with eight candles. 

Eventually, the accepted sequence became that of Beit Hillel and this is the way we light the Chanukah candles now. 

But suppose, during the ancient times, when both methods were still in use, if you had seen from afar a lit Chanukiya on the fourth day of Chanukah. 

How would you be able to determine whether it was lit according to Beit Shamai or according to Beit Hillel?