find the first elements of a column matrix
This would be better as "find the nth element of an array." Also, a column matrix doesn't exist. Perhaps you meant column vector, though the variables in your test cases are row vectors.
Matrix indexing with two vectors of indices
How many jokers?
Check if equal
Matlab Basics - Create a row vector
Test Problem; Create a 5x5 array containing all ones
modulus of a number
Calculating selling price
find a specific element from an matrix
multiply an array by its position number
Determine whether the input is divisible by 3 as well as 5
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