Pascal's Triangle

Question

Crystal made a wonderful Christmas tree for her math teacher. She used the first 7 levels of Pascal’s triangle for the tree and the stump was the sum of the numbers in the 11^th row and the 12^th row, respectively.

Answer 1

1

11

121

1331

14641

15,10,10,51

16,15,20,15,61

17,21,35,35,21,71

18,28,56,70,56,28,81

19,36,84,126,84,36,91

1,10,45,120,210,120,45,10,1

1,11,55,165,330,330,165,55,11,1

1,12,66,220,495,660,495,220,66,12,1

2+23+121+385+825+990+660+275+77+13+1

=3372