#union,intersection,difference
st={1,2,3,4,5,6,7}
st1={5,6,7,8,9,10}
#st3=st.union(st1)#combine 2 sets and remove duplicate elements
#st3=st.intersection(st1)# print common elements
#print(st3)
st3=st.difference(st1)#elements present in st(a) and not present in st1(b)
print(st3)





