Assuming young-earth creationism, could Adam calculate the age of the earth using science? I some times wonder when God made the garden, to beautify it, the trees for example must have been differing height and width.  Therefore, assuming a literal 7 day creation, if Adam were to cut a tree, the day after he was created, would he have found thick trees with several rings? 

Would Adam really be able to determine how old the world was studying rocks, trees, etc.? Was science prevented from ever understanding creation by virtue of its incomprehensible design on day one?

Would a rock's radioactive print seem like a billions years old, when only one day old? How would a fully created universe seem like a day old? Would not some things appear to have started motion long ago to reach the place where they were created?

That is a lot of questions but it is really one: 'Could Adam calculate the age of the earth using science?'
For the sake of not getting into an argument, let's assume a genesis / biblical creation, literal/YEC-style. The "trees/rings" thing is pretty much unanswerable, but fortunately we don't even need to know anything about the garden of Eden / Adam, because what we do have is the light from other stars, for which we have good confidence for the distance / trajectory / etc. Under the laws of physics, the light has been travelling for many millions of years (indeed, the Hubble experts claim to have light from one 13 billion years ago).

This leaves us two conclusions inside a YEC/literal genesis:


the universe was made fully "with age", so no: you wouldn't have been able to use science to "age" it (see also, Last Thursdayism)
the laws of physics have been significantly changed, so no: you wouldn't have been able to use science to "age" it


(or of course the option that Genesis is not a reliable source of creation information)