Question: Let X be the set { 1 , 2 , 3 , 4 , 5 } and Y be the set { 6 , 7

Let X be the set {1,2,3,4,5} and Y be the set {6,7,8,9,10}. We describe the functions f: X->Y and g: X->Y in the following tables.
f(1)=6
f(2)=7
f(3)=6
f(4)=7
f(5)=6
g(1)=10
g(2)=9
g(3)=8
g(4)=7
g(5)=6.
f is onto.
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