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111,111,111x111,111,111=12345678987654321

 May 10, 2016
 #1
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Good question. (I really don't know!)surprise

 May 10, 2016
 #2
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11 is just a strange number... 

1 x 11 = 11

2 x 11 = 22 etc. 

 

12 x 11 = 132

13 x 11 = 143

14 x 11 = 154 etc. 

 

11 x 11 = 121

111 x 111 = 12321 etc. 

111,111,111 x 111,111,111=12345678987654321

 

111,111,111,111 x 111,111,111,111 = 12345679012320987654321 which ends with 987654321

it's just wonderful

 May 10, 2016

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