Amitava, can you please be a little more specific than "mentioned earlier"? Remember, you can put links into your description with notation.
corrected. thanks, Ned.
struggled with this one :) Hint :monte carlo algorthim approach
Matrix indexing with two vectors of indices
Sum the entries of each column of a matrix which satisfy a logical condition.
Create an n-by-n null matrix and fill with ones certain positions
Is this triangle right-angled?
count any radix?
Given n, create n random numbers such that their standard deviation is also n.
swap sign sum & multiply castles
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