Question

if the set a has 3 elements and the Set B equal to 3, 4, 5, then the find number of element in a ×b

Answer 1

let the total elements of A and B 
 (A×B)=n(a)*n(b)
where a=3 & b=3
   3×3=9

Answer 2

Answer:

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HI THERE,

⇨Given, set A has 3 elements and the elements of set B are {3, 4, and 5}.

So, the number of elements in set B = 3

Then, the number of elements in (A × B) = (Number of elements in A) × (Number of elements in B)

= 3 × 3 = 9

Therefore, the number of elements in (A × B) will be 9.

$\huge\boxed{\fcolorbox{blue}{orange}{hope it helps}}$