Are the tasks difficult for a tester?

Question

Software testing

Hello everyone, I would like to ask you to evaluate the complexity and adequacy of the task for testers, because they seem quite simple to me, but HR, when searching for candidates, says that when transferring tasks, testers are eliminated and do not get in touch.
1. There is a module for calculating matrices (distances between geographical points along roads). The module works with a road graph, the input is a set of points, the distance between which needs to be calculated.
Task: what main scenarios and data need to be prepared (including incorrect ones) for testing, what main problems can be in the input data.
2. There is a “cargo” object, there is a “car” object, these objects have characteristics that work as follows:
The characteristic marker shows the compatibility of the car with the cargo
Characteristics may or may not be compatible with each other (included in the same group)
Task: write a script for testing the cargo characteristics module
3. There is a data import module, the data has a tabular format, a strict sequence of columns, the parser in each of the columns expects a certain type of data ( numeric value, textual value, time, date, coordinates)
Task: describe the data import test scenario /Tutorials/Basic/01-Basic_grid.html ), in one of the cells in case of success there will be a line "Plan (n/nn/nnn)" otherwise there will be a line with an error.
Task: describe the scenario for testing the function and what auto-test toolkit you would use here.
5. File with point coordinates ( https://yadi.sk/d/JUDGgPiqpl9l1A)
Task: write a parser in any language that:
• Creates an array of "point" objects with the code and its coordinates
• Outputs points with incorrect coordinates as a result
• Will give a list of points where the deviation from the arithmetic mean (pool of points) Longitude is more than 3 degrees.

Answer 1

Tasks from a narrow subject area - those the applicant must have experience in testing and solving university problems on graphs, ZKP, etc.
These either do not go to testing or want money
Testing software that does not always give the same result, the black box approach is the main one pain
Approach to solving your problem:
Look for applicants at universities that teach your type of problems at a normal level and teach them how to write tests
You can also contact teachers directly and ask them to recommend you
Increase salary - for ready-made specialists
Also you are looking for non-testers, and QA - a specialist with some scientific background
QA differs from a tester in that he makes decisions on an equal footing with the PM and the customer
It is better to post tasks on github along with the data - so there is a chance that a developer with the appropriate background who is interested in interesting tasks will contact you

Answer 2

testers are weeded out and do not get in touch.

There can be a million other reasons for this, not related to the tasks themselves. Those who are really looking for work will solve them and send them even if it turns out badly - at least to find out whether it turned out badly or well.
Tasks don't have to be "simple/difficult enough to not filter out/not filter out" - they should correspond to what tasks you will actually set for people in the work.
If you do not have candidates for this level, then first of all you need to reconsider who and how you are looking for. Or look better, or lower the level (and expect candidates of this level at interviews)
Maybe you have a problem in general that they offer little money. Or HR is rude to everyone. Or something else.

Answer 3

A person with experience is unlikely to solve these problems. You have to be Amazon and offer relocation to Seattle if you want a person to understand these conditions.