If A = 3, 5, 7, 9, 11 and B = 4, 7, 10 , find: n(B) - Vidyadip

Question

If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: n(B)

✓

Answer

n(B) = (4, 7, 10) = 3

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