Question

If the set 'a'has three element and the set b={3,4,5}find the number of element in A×B

Answer 1

Answer:

9

Step-by-step explanation:

let a = {x,y,z} then

a×b = { (x3) , (x4) , (x5) , (y3) , (y4) , (y5) , (z3) , (z4) , (z5). }