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3N3 (Posted on 2018-01-08) Difficulty: 2 of 5
My 4-digit number N becomes 43 times bigger if you squeeze it between two threes.

Find N, aided by pen & paper only.

No Solution Yet Submitted by Ady TZIDON    
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Solution Solution . . . | Comment 1 of 3
Let x = 4 digit number
Then, 43 x = 10x + 3 + 300,000 
       =>  x = 9091

Check: 390913 = 43 * 9091

here's to a happy and healthy 2018!

  Posted by JayDeeKay on 2018-01-08 09:00:27
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