In a group of 70 people, 37 like fish, 52 like mutton and each person likes at least one of the two dishes. How many people like both fish and mutton? How many like fish only? 

If $\rm U$= {1, 2, 3, 4, 5, 6, 7, 8, 9}, $\rm A $= {1, 2, 3, 4}, $\rm B $ = {2, 4, 6, 8 } and $\rm C $ = {1, 4, 5, 6 }, find $ \rm \overline{(B - C)} $

In an examination, 56% of the candidate failed in English and 48% failed in chemistry. If 18% failed in both English and Chemistry, find the percentage of those who passed in both subjects.

Two finite stes have $\rm m $ and $\rm n$ elements. The total number of subsets of the first set is 56 more than the total number of subsets of the second set. The values of $\rm m $ and $\rm n$ are

$\rm A $ and $\rm B $ be two sets in the same universal set, then $\rm A - B$ is