Back to basics 17 - white space
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
Change the sign of even index entries of the reversed vector
Magic is simple (for beginners)
If you prick us, do we not bleed?
Singularity v5 (with apologies to the true hack masters)
Two fractions, one sum
Sleeping Queens 1
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