Let `S = {1,2,3,...,18,19,20}` be the universal set.

Let sets `A` and `B` be subsets of `S`, where:

Set `A = \{1,2,3,7,8,10,12,14,15,18,19,20}`

Set `B = \{1,2,4,5,6,9,10,11,14,16,17,19,20}`

Determine the following:


`n(A)=`
`n(B)=`