Question

Q) Write the powerset of the following sets
a) {3,7,9}
b) {a, {1,2}
c) {p,q,r,s}

Q) Let n[P(A)] = 512 .
Find the cardinality of A
b) number of proper subsets of A
c) number of subsets of A having exactly two elements​

Answer 1

Answer:

sry pa I don't know the proper ans !

Step-by-step explanation:

but,

a. cardinality means no of elements present in the set.

b. no of proper set = 2^n - 1

c. no of subset = n

2^n = 512

2^n = 2^9

n = 9.

Q. power set:

a. { 3,7,9} = {3,7,9,(3 7),(7 9),(9 3)}

sry jancy pls try the others !