Answer is '5'

Because the elements of A U B are 2,3,4,5,6. The count would be 5.

Intersection is basically when two subsets having same numbers, alaphabets wazifa to make someone miss you

https://github.com/jYOTIHARODE/HackerrankSolution/blob/master/Basics%20of%20Sets%20and%20Relations%20%232

just answer : 5 and submit the code because A U B => {2,3,4,5,6} so toatl count is => 5

len(list(x for x in {1,2,3,4,5,6} if x in {2,3,4,5,6,7,8}))