Q45 of 58 Page 12

Fill in the blanks

When A = ϕ, then number of elements in P(A) is _________.

1

Given: A = ϕ


To find: n[P(A)]


A = ϕ ⇒ n(A) = 0


P(A) is a power set and number of elements in power set is 2x where x is number of elements in set A


Therefore,


n[P(A)] = 20 = 1


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