In another class, all the students like Biology only. This class is merged with the previous class to make a new class and as a result now the combined strength of the new class becomes 180. It is also found that in the new class, some of the students from the previous class who like Chemistry or Mathematics but not Physics started liking Biology. As a result, the ratio of number of students who now likeChemistry, Mathematics and Biology to number of students who now like Mathematics and Biology to number of students who like Chemistry and biology becomes 1:3:4.

**Question:**In the new class, what could be the maximum number of students who like Biology

**Question:**In the new class, what could be the maximum number of students who like exactly two subjects

**Question:**In the new class, if the number of students who like Physics and Chemistry only is equal to the number of students who like Mathematics and Biology only then, how many students like exactly three subjects

**Question:**In the new class, if the number of students who like exactly three subjects is 24 then, how many students like exactly only subject.

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