Question

Question 9 Let A and B be two sets such that n(A) = 3 and n (B) = 2. If (x, 1), (y, 2), (z, 1) are in A × B, find A and B, where x, y and z are distinct elements.

Class XI - Relations and Functions Page 33

Answer 1

A× B=(x,1)(y,2)(z,1)

AxB={(x,y) / x,y, x€ A,y€B}

thus ,

A={x,y,z}
B={1,2}

Answer 2

n(A) = 3
n(B) = 2

we know in A×B
A = set of 1st element in A×B
B= ser of 2nd element in A×B

so it is clear that
A= {x,y,z}
B={1,2}