Answer:
Do you want me the money for the policy that has been canceled
Choice is the answer you want
A space station is an artificial satellite in which people can live and work for a long period of time. Space station is placed on the space for the astronaut in researching things on the space and universe.
Answer: a) 
(b) 
(c) 
(d) 
Explanation:
The formal description of the given sets are as follows :-
a) The set containing the numbers 5, 9, and 27.

(b) The set that contains all the natural numbers less than 2.

(c) The set containing the empty string.
We know that in formal description, the empty string is denoted with
.
Thus, the required set : 
(d) The set containing nothing at all.

What things?????? Are u talking about