1.

If A={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(i) A−B(ii) A−C(iii) A−D(iv) B−A(v) C−A(vi) D−A(vii) B−C(vii) B−D(ix) C−B(x) D−B(xi) C−D​​​​​​(xii) D−C

Answer» If A={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

(i) A−B

(ii) A−C

(iii) A−D

(iv) B−A

(v) C−A

(vi) D−A

(vii) B−C

(vii) B−D

(ix) C−B

(x) D−B

(xi) C−D

​​​​​​(xii) D−C




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