Make the following variable:
A 9x9 matrix of zeros, but with the following values on the main diagonal:
(Hint: use diag)
Make a checkerboard matrix
Extract leading non-zero digit
Cell Counting: How Many Draws?
Change the sign of even index entries of the reversed vector
Maximum value in a matrix
07 - Common functions and indexing 1
02 - Vector Variables 1
01 - Scalar variables
07 - Common functions and indexing 4
07 - Common functions and indexing 2
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