IfA=(3,6,9,12,15,18,21);B=(4,8,12,16,20)
C=(2,4,6,8,10,12,14,16);D=(5,10,15,20)Find
A-B  A-C  A-D  B-A  C-A   
 D-A  B-C  B-D  C-B  D-B
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Deekonda Harshitha
Oct. 12, 2021, 12:25 a.m.