400*20%, come on... We should have a higher bar than this...
Civil Service exams are intended to assess merit and fitness for a job. This has been subject to litigation since the 90s by various parties who felt that minorities and others were underrepresented.
In New York, the courts found in the 90s that many exams were partially IQ tests, which put the plaintiffs at a disadvantage. So they dumbed down civil service exams to be a combination of grammar, random factoids, and basic math.
When you are testing for reasoning, analysis, etc those are exercising the the same parts of the brain as an IQ test.
When you make a test such that you can just memorize grammar rules and know facts, you’re assessing the willingness of the candidate to study, or have access to study materials.
Depending on the job, it may not matter at all. Your IQ over a moderate threshold is irrelevant to many occupations.
And even if I did, the standard for getting a gun should be higher than this.