Do we say, "I have aptitude in math' or "i have aptitude for math'?

I find knowing what preposition to use the hardest part of mastering English.
How can I study for this?
Oh those tricky prepositions! [6]
In this case, use "for". The best way to study these is to look in the dictionary for examples of using the main word.
Aptitude for example, has this example: She has a special aptitude for mathematics.
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its aptitude for
For is right here.
I also don't know I am searching for the answer. Saray yahan mere jaisay hi hain 不不不不不不
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Aptitude for