Let S={1,2,4,5,9,12} and T={2,5,9} .
(1) Find: n(S)
(2) Find: n(T) .
(3) Decide whether the statement is true or false: 4∈S
(4) Decide whether the statement is true or false: 4∈T
(5) Decide whether the statement is true or false: 1∈/T
(6) Decide whether the statement is true or false: T⊆S
(7) Decide whether the statement is true or false: T⊂S