Self-study
Curator: Our museum displays only twentieth-century works, which are either on loan from private collectors or in the museum's permanent collection. ██████ ██ ███ ██ ███ ██████ █████ ███ █████████ ██ ███ ██████ ██████ ███ ██████ █████ ████ █████ ██████ ██ ████ █████ ████ ███ ███ ████ ██ ███ ████████ █████████ ███████████ ████ ██ ████████ ███████████
Summary
If it’s on display, it’s a 20th century work.
If it’s a 20th century work on display, it’s on loan OR in the permanent collection.
If it’s in the permanent collection, prints of it are available in the store.
Some works that aren’t part of the permanent collection are in the store, such as Nighthawks.
Notable Valid Inferences
No particular inference stands out, aside from recognizing the connections between conditionals. If something’s on display, then it must be on loan OR permanent. If it’s permanent, prints of it are available in the store.
17.
If the curator's statements are █████ █████ ███ ██ ███ █████████ ████ ██ █████
a
Every print in ███ ██████ █████ ██ ██ █ ████ ████ ██ ██████ ██ ████ ██ ███ ██████ ████ █ ███████ █████████ ██ ████ ██ ███ ████████ █████████ ███████████
Could be false. We don’t know about everything available in the store. We know that anything in permanent collection is available in the store. That doesn’t tell us that everything available in the store is on loan or in the permanent collection.
b
Every print that ██ ████ ██ ███ ██████ █████ ██ █ ████ ██ █ █████████████████ █████
Could be false. We don’t know about everything available in the store. There could be many things in the store that are not on display.
c
There are prints ██ ███ ██████ █████ ██ █████ ████ ████ ██ █████████ ██ ███ ██████ ███ ███ ██ ████ ████ █ ███████ ██████████
Must be true. If it’s on display, but not on loan, it must be in permanent. And if it’s in permanent, there are prints available of it in the store.
d
Hopper's Nighthawks is ████ █ █████████████████ ████ ███ █ ████ ██ ████ ██ ███ ██████ ████ █ ███████ ██████████
Could be false. We know Nighthawks is not part of the permanent collection. That doesn’t tell us anything else about Nighthawks. It might be on loan, or it might not. It might be 20th century, or it might not.
e
Hopper's Nighthawks is ███ █████████ ██ ███ ███████
Could be false. We know Nighthawks is not part of the permanent collection. That doesn’t tell us whether it is on display. It might be, or it might not.