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55th in the list (Posted on 2010-10-28) Difficulty: 2 of 5
List all the numbers below 2010 having all the following features:

1. n-1 is a multiple of 3.

2. n^2-1 is a multiple of 8.

3. n^3-1 is a multiple of 10.

If you arrange this list in an ascending order, what number will be in the 55th place?

No Solution Yet Submitted by Ady TZIDON    
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solution | Comment 1 of 6

There are 66 values of N less than 2010.  The 55th is 1651.

 


  Posted by ed bottemiller on 2010-10-28 21:02:00
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