Can you please check if they are correct?
a. {0} <-- True
b. { ,{0}} <-- True
c. { } { } <-- True
d. { } {{ }} <-- False
e. { } { , { }} <-- True
f. {{ }} { ,{ }} <--False
g. {{ }} {{ },{ }} <--False
Thank you
Can you please check if they are correct?
a. {0} <-- True
b. { ,{0}} <-- True
c. { } { } <-- True
d. { } {{ }} <-- False
e. { } { , { }} <-- True
f. {{ }} { ,{ }} <--False
g. {{ }} {{ },{ }} <--False
Thank you
Just a comment on g. and Grandad's answer--
The answer depends on your interpretation of the symbol . Some authors define this symbol to mean either proper inclusion or equality of sets. I.e., means every element of A is also an element of B. If your book or teacher defines it this way then your answer is wrong.
Other authors define to mean proper inclusion, i.e. means every element of A is also an element of B but , and write or if A may be a proper subset of B or equal to B. So it depends.