1. AUB = { r, i, c, h, m, d, n, a, l, e, f, o, w }
2. AnB = { l, e, r }
3. A' = { b, f, g, j, k, w }
4. A'nB = { f, w }
5. A - B = { r, i, c, h, m, d, n, a },
6. B - A = {f, o, w }
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Answers & Comments
1. AUB = { r, i, c, h, m, d, n, a, l, e, f, o, w }
2. AnB = { l, e, r }
3. A' = { b, f, g, j, k, w }
4. A'nB = { f, w }
5. A - B = { r, i, c, h, m, d, n, a },
6. B - A = {f, o, w }