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प्रश्न
If the set A has 3 elements and the set B = {3, 4, 5}, then find the number of elements in (A × B).
योग
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उत्तर
It is given that set A has 3 elements and the elements of set B are 3, 4, and 5.
⇒ Number of elements in set B = 3
= Number of elements in (A × B)
= (Number of elements in A) × (Number of elements in B)
= 3 × 3 = 9
Thus, the number of elements in (A × B) is 9.
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