Question

3. How many proper subsets can the following sets have?
(i) A = {a, b, c, d, e, f}
(ii) B = {6, 16, 26, 36, 46, 56, 66}
(iii) C = {x | x = 3a, a < 5, a e N}
(iv) D = {x | x = 63a, 10 < a < 20, a EN
(v) E = {x | x = 3a² + 27, 18 < a < 26, a € N}​

Answer 1

Answer:

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