find the cardinal number of the set d={1,0,8,14,6,7}
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A = {0,1, 2, 4} i.e n(A) = 4
(ii) B = {-3, -1, 1, 3, 5, 7} i.e n(B) = 6
(iii) C = {} i.e n(C) = 0
(iv) D = {3, 2, 2, 1, 3, 1, 2} = D = {3, 2, 1} i.e n(D) = 3
(v) E = {16, 17, 18, 19} i.e n(E) = 4
(vi) F = {8, 9 , 10, 11, 12, 13, 14} i.e n(F) = 7
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