Let A = {2,7,8}, B = {-1,2,6,7}, C = {2,4,6,8,10}, D = {{7},{2,4},{6},2 ,8} List each set starting with lowest cardinality to highest. List elements in ascending order.  Note that any answer that should be a set MUST be entered using set notation with no spaces. What is the power set of A? _______________________ Answer is not {Ø,{2},{7},{8},{2,7},{7,8},{2,7,8}}

Database System Concepts
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Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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Let A = {2,7,8}, B = {-1,2,6,7}, C = {2,4,6,8,10}, D = {{7},{2,4},{6},2 ,8}
List each set starting with lowest cardinality to highest. List elements in ascending order. 
Note that any answer that should be a set MUST be entered using set notation with no spaces.

What is the power set of A? _______________________

Answer is not {Ø,{2},{7},{8},{2,7},{7,8},{2,7,8}}

Expert Solution
Step 1

Power Set:-

All subsets, including the empty set and the original set itself, are included in the power set. P is frequently used to indicate it. The number of subsets that may be created from a given set determines the cardinality of a power set, a particular sort of set. If the set A =x,y,z is a set, then all of its subsets x,y,z,x,y,y,z,x,z,x,y,z and   are the components of a power set, such as:

Power set of A, P(A) =x,y,z,x,y,y,z,x,z,x,y,z,

where the power set is represented by P(A).

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