Question

let A=(1,-1) B=(a,b,c) then number of possible relations from Ato B is a)16 (b) 64 (c)7 (d) 81​

Answer 1

It is given that A={x,y,z} and B={1,2}

∴ A×B={(x,1),(x,2),(y,1),(y,2),(z,1),(z,2)}

Since n(A×B)=6

The number of subsets of A×B is 2 6