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A is a set of first 10 natural numbers a...

A is a set of first 10 natural numbers and R is a relation from A to A defined as:
`(x,y) in R hArr x+2y=10` when `x,y in A`
(i)Express R in the form of a set of ordered pairs.
(ii) Find the domain and range of R.
(iii) Find `R^(-1)` .

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