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Question

If A = {a, b, c, d} and B = {a, e, i, o, u}, then sets A and B are 
  1. joint sets
  2. disjoint sets
  3. equivalent sets
  4. equal sets


Solution

The correct option is A joint sets
Two sets A and B are said to be equal sets  if they contain the same elements.Hence A and B are not equal sets

Two sets A and B are said to be equivalent sets  if they contain the same number of elements. Set A has 4 elements while set B has 5 elements. Hence A and B are not equivalent sets

Two sets A and B are said to be overlapping/ joint sets  if they contain at least one element in common.

A = {a, b, c, d} and B = {a, e, i, o, u} have element 'a' in common. Hence they are joint sets.

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