# A cute odd triangle Part 1

**Number Theory**Level 1

\[ 1 \\ 1 \ \ 3 \\ 1 \ \ 3 \ \ 5 \\ 1 \ \ 3 \ \ 5 \ \ 7 \\ 1 \ \ 3 \ \ 5 \ \ 7 \ \ 9 \\ 1 \ \ 3 \ \ 5 \ \ 7 \ \ 9 \ \ 11 \\ . \\ . \\ . \\ \]

The above diagram shows the first few rows of the arrangement of odd numbers in ascending order (from left to right) with each row having one more number than its previous row.

What is the sum of all the numbers in the 100th row?

See Part 2.