For each of the following sets, determine whether 2 is an element of that set

integer-greater

#1

For each of the following sets, determine whether 2 is an element of that set.
a. {x | x is an integer greater than 1} d. {{2}, {{2}}}
b. {x | x is the square of an integer} e. {{2}, {2, {2}}}
c. {2, {2}} f. {{{2}}}

Answer:

a) yes, 2 is an integer greater than 1
b) no, 2 is not a square of an integer
c) yes, 2 is in the list of the elements
d), e), f) no, there is no 2 in the list of elements (only the sets, containing 2, but these sets are are not equal to 2)