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QUESTION 25

Determine if the function defined below is one-to-one, onto, both, or neither.

f:X→Y

where

X= {a,b,c,d), Y={1,2,3,4}

and

f(a)=4, f(b)=2, f(c)=1, f(d) = 3.

a. One-to-one

b. Onto

c. Both one-to-one and onto

d. Neither one-to-one nor onto