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(Solved): 6) a. Give an example of a function from N to N that is onto but not one-to-one.
(2 marks)
b. Let A= ...
6) a. Give an example of a function from N to N that is onto but not one-to-one.
(2 marks)
b. Let A={1,2,3,dots,8} and consider the function f:P(A)->N given by
f(B)=|B|. Prove or disprove the statement that f is one-to-one. (2 marks)