Question

If A = {1,3,9} then which of the following is power set of A

Answer 1

Step-by-step explanation:

Cardinality is the number of elements in a set.

Now, the number of elements in the power set of a set containing n elements is  2n

Here n=4, 

So, no. of elements in power set of A is 24=16

Hᴏᴘᴇ ɪᴛ ʜᴇʟᴘs ᴜʜ

Answer 2

Answer:

()

(1),(3),(9),(13),(19),(139),(39)