There are some tweaks in summation that you might observe via test suites
Try if you can
The Goldbach Conjecture
letter yes yes & letter no no
Sum of odd numbers in a matrix
Summation of array
Test Problem; Create a 5x5 array containing all ones
Move if I am Optimus Prime
Create tangent function out of sin and cos
Beat the test suite if you can :)
Get all prime factors
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