The only thing on the ASVAB the Army cares about is the GT score. When I took the test as a dumb high school kid I was only smarter than 79% of the population and had a GT score of 107, which is too dumb to become an officer. Many years later after almost 7 years programming full time in the corporate world I retook the ASVAB. Then I was smarter than 98% of the population and had a GT score of 129. The max is 130, so I may have had the highest GT score among test takers that year.

The GT score is comprised of combinations of several different segments of the ASVAB of which the most important is applied arithmetic. Those are math problems in paragraph form that requires careful reading and multiple steps of very simple algebra like calculating pricing for a retail purchase and deduction of the coin denomination in return. The challenge there is just finishing the test because they, by design, do not provide enough time.

EDIT

I just want to point out that I did not become more intelligent as I got older. My ability to read and instantly formulate logic substantially improved as I got older through practice. Those, reading and logic, are skills and the performance improvement is permanent.