It is required to replace all values in a vector that are multiples of 5 with NaN.
input: x = [1 2 5 12 10 7]
output: y = [1 2 NaN 12 NaN 7]
So many choices
Test if a Number is a Palindrome without using any String Operations
Back to basics 21 - Matrix replicating
Basic arrays operations.
07 - Common functions and indexing 1
Two-output anonymous function?
Raise Matrix to Power
Create an 'arrow-head" matrix
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