DAT Bootcamp Test 2 TFE Q24

[99dmg]

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Hi guys,

I was wondering how to differentiate options A and B. It seems like both A and B could produce the Top and Front views that they provided

Thanks

 

[FeralisExtremum]

For A to be valid, there would have to be a small square shaped piece either sticking out past the rest of the shape (which we know there isn't from the front and top view - nothing unevenly extends past the right side), or there would have to be a small square shaped indentation of some length that stops inside the object.The top view is a bit ambiguous here, but from the front view we can see there is no such stopping point for an indentation - in fact the indentation passes all the way through, there's literally just a chunk of the thing completely hollowed out, as seen in B.

The top view might throw you off because of the square shape formed by the intersection of the two dotted lines in the bottom right that may be appear to be an partial indentation from another view. But the front view shows us that the relevant indentation passes all the way through the object.

If this was too confusing, I can try to do a diagram that might make it clearer.

 

[99dmg]

I was looking at A as a small rectangular solid object and a larger rectangular object with a hole/divot exactly the size of the small rectangular object on top of each other like two puzzle pieces fitting together

Also, could someone do this cube count? I've done it like 5 times and I keep getting the same answer, but it's different from the answer key

ANS Key says:
0: 1
1: 2
2: 4
3: 6
4: 3
5: 2

 

[FeralisExtremum]

I see what you're describing, but the DAT won't ever put a second object that slides exactly into the dimensions of a first object. Technically if they did, you wouldn't see any solid lines representing a change in depth, because that object would be filling it entirely and it would appear smooth anyway.

For your cube counting I got the same one as the answer key but there's a bit of an optical illusion going on as the cube furthest back looks like it could either be a cube stacked on top of an existing row of cubes, or in a completely separate row of its own. If you're looking at it as the latter, you would get a different set of results. Fortunately the real DAT doesn't tend to give you cube counting questions with optical illusions like this.

 

[99dmg]

Okay that makes sense that the DAT wouldn't do that for the TFE. I think you would still see the solid line from the front view since its two different pieces of blocks that you could tell apart wouldn't you? (just seeing if I am understanding these solid/dashed lines)

Thanks for your help! I see the optical illusion now haha. I had no idea what was going on when I was reviewing the answer key, but it seems so obvious now

 

[FeralisExtremum]

I think you would still see the solid line from the front view since its two different pieces of blocks that you could tell apart wouldn't you? (just seeing if I am understanding these solid/dashed lines)

It's a good question, but I'm not sure how the DAT would represent such a hypothetical. Since solid and dashed lines are supposed to represent changes in depth, you would probably have a sort of extremely narrow crack in between, but fortunately you'll never have to deal with that possibility on an exam (TFE would be significantly harder if you had to account for that possibility with every line/dash).

 

[PearlExplorer]

I was looking at A as a small rectangular solid object and a larger rectangular object with a hole/divot exactly the size of the small rectangular object on top of each other like two puzzle pieces fitting together

Also, could someone do this cube count? I've done it like 5 times and I keep getting the same answer, but it's different from the answer key

ANS Key says:
0: 1
1: 2
2: 4
3: 6
4: 3
5: 2

It's tricky because of the hidden cubes in the back but I got the same count as the key (on the second try).
Total count is 18. Try tallying it going from back to front, bottom to up, starting from the left.