consider the following sets:
U=counting numbers
L=1,2,3,5,7,9
M=3,69
N=2,3,4

identify the elements
16.LUM=________
17.LUN=________
18.MΠN=_______
19.LΠM=_______
20.L-M=______
21.M-N=_______
22.L=________
23.N=_______
24.M=_______
25.LΠMΠN=_____​