st1={1,2,3,4,5,6,7,8,9,10}
st2={5,6,7,8,9,10,11,12,13,14,15}
#union
#combine 2 sets and remove duplicates
# st3=st1.union(st2)
# print(st3)

#intersection: return common elemnts in 2 sets
st4=st1.intersection(st2)
print(st4)

#difference:in set 1 and not in set2
st5=st1.difference(st2)
print(st5)