Question

If U = {x: xεN, x ≤ 30},A = {x: x is a prime < 5}, B = {x: x is a perfect square ≤ 10}
and C = {x: is a perfect cube ≤ 30}, then verify the following results:
(i) (A ∪ B)
| = A
| ∩ B
|

(ii) A
| − B
| = B − A

Answer 1

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