For vector Grades=[98 56 78 34 100 88 87], delete the number 78 to get the following matrix
Grades=[98 56 34 100 88 87]
**remember you have to create the matrix first
This user (ALBERT ALEXANDER STONIER) appears to have gamed the system, with fraudulent "likes" of this unremarkable solution submitted by 'sock-puppet' accounts. —DIV
Extract leading non-zero digit
convert matrix to single column
Find a Pythagorean triple
Back to basics - mean of corner elements of a matrix
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