1.

Let A = {1, 2, 3}, B = {4, 5, 6, 7} and let f = {(1, 4), (2, 5), (3, 6)} be a function from A to B. Based on the given information, f is best defined as :(a) Surjective function(b) Injective function(c) Bijective function(d) function

Answer»

Option : (b) 

As every per-image x ∈ A has a unique image y ∈ B

⇒ f is injective function



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