Question

If `R` is the relation "less than" from `A={1,2,3,4,5}` to `B={1,4,5},` write down the set of ordered pairs corresponding to `R`. Find the inverse of `R`.

Answer 1

1)`R in (x,y)`
`xlty`
`R={(1,4),(1,5),(2,4),(2,5),(3,4),(3,5),(4,5)}`
2)`R^(-1)={(4,1),(5,1),(4,2),(5,1),(4,3),(5,3),(5,4)}`.