The set consisting of only -9 ie {-9},
the set consisting of -9 and 5 = {-9,5},
the set consisting of -9 and 3 and sqrt(17) = {-9,3,sqrt(17)}, and so on.
Chat with our AI personalities
Natural numbers.
1.18 is a number and number do not contain any sets (of any kind).
-10 belongs to the set of all integers denoted by Z.
173 belongs to the set of positive natural numbers and it also belongs to the set of prime numbers.
19 doesn't belong. The rest of the numbers are multiples of 3.