$$ 1 + 1+1 + 21 = 24$$. 
A cat divides $$24$$ fish into $$4$$ groups, and each group has at least $$1$$ fish. There are  fish in the group that has the largest number of fish. 
Options:
1: $$6$$ 
2: $$24$$ 
3: $$1$$ 
4: $$21$$ 