A software program in which data is organized as a collection of tables, and relationships between tables are formed through a c
1 answer:
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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.