• "Second example" is not correct???

Question related to mission Golden Pyramid

 

Hi, "Second example" is: (1,), (2, 1), (1, 2, 1), (1, 2, 1, 1), (1, 2, 1, 1, 1), (1, 2, 1, 1, 1, 1), (1, 2, 1, 1, 1, 1, 9) )))# == 15, "Second example" But if you'll count the piramyd, the answer will be: 13. 1+2+2+2+2+2+2 = 13 - but not 15???

How it could be???

Created at: Jan. 25, 2018, 2:51 p.m.; Updated at: Jan. 26, 2018, 8:45 a.m.
The question is resolved.