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Let A = {10,11,12,13,14} , B = {0,1,2,3,...

Let A = {10,11,12,13,14} , B = {0,1,2,3,5} and `f_(i) : A rarr B ` , I = 1, 2,3, state the type of function for the following (give reason ) :
(i) `f_(1) `= {(10,1),(11,2),(12,3),(13,5),(14,3)}
`f_(2)` {(10,1),(11,1),(12,1),(13,1),(14,1)}
(iii)`f_(3) = {(10,0),(11,1),(12,2),(13,3),(14,5)}`

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