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List all perfect square numbers over 1000, employing only 2 different decimal digits. Example: 88^2=7744 will be on your list.

Ignore trivial solutions like 1 or 4 or 9 followed by an even number of zeroes.

How far can you go?

Known largest solution is a 10-digit number 6,661,661,161.

(No Solution Yet, 0 Comments) Submitted on 2018-10-21 by Ady TZIDON   
Difficulty: 3 of 5 Bonus: Gain or Loss (in Just Math) Rating: 3.17
The minute and the hour hand of a watch meet every 65 minutes.

How much time does the watch lose or gain ?

(Solution Posted, 7 Comments) Submitted on 2003-07-05 by Ravi Raja   
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Recently Posted Solutions:
Difficulty: 3 of 5Get the bases! (in Just Math)
Submitted By Ady TZIDON. Solution posted on 2018-10-18 02:24:50
Difficulty: 1 of 5Times Square 2 (in Numbers)
Submitted By Charlie. Solution posted on 2018-10-10 14:57:32
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