Find the element from matrix which is in 2nd row and 3rd column.
At a minimum, you should make this problem variable. For example, find the element at the ith row and jth column and define i and j in the test cases, which are passed along with the function.
Remove NaN ?
Duplicate each element of a vector.
Create sequnce 1 4 9 16 25.........
Pointwise multiplication of vectors.
multiply an array by its position number
Calculating selling price
Find remainder when x is divided by 3
Find the last digit
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