Question: 21. (2.3 Functions) Let A = {1,2,3,4} and B = {a,b,c,d} be sets. Which of the following arrow diagrams is NOT a function from A

21. (2.3 Functions) Let A = {1,2,3,4} and B = {a,b,c,d}

21. (2.3 Functions) Let A = {1,2,3,4} and B = {a,b,c,d} be sets. Which of the following arrow diagrams is NOT a function from A to B? 2 3 OC 3 a b. 7 Discrete Structures CMSC 2123 CRN 11094 IVE CRN 15441 Test 1 Version 1 Autumn 2020 20 Oc 30 d d

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