In a hall of 80 members, 45 members like Lawani, 55 members like Tamasha, 10 members like neither of two. Then the number of members in the hall who like both.
1
45
2
25
3
20
4
30
In a hall of 80 members, 45 members like Lawani, 55 members like Tamasha, 10 members like neither of two. Then the number of members in the hall who like both.