If A={2,4,6,9}, B={4,6,18,27,54} and a relation R from A to B is defined by R={(a,b):a belongs to A and b belongs to B, a is a factor of b and a<b}, then find R in roster form . Also find its domain and range

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A=2,4,6,9 and B=4,6,18,27,54R=a,b:aA, bB, a is a factor of b and a<be.g 2 is a factor of 4 and 2<4, so 2,4RLikewise 2,6,2,18,2,54RSimilarly 6,18,6,54,9,18,9,27,9,54RHence:R=2,4,2,6,2,18,2,54,6,18,6,54,9,18,9,27,9,54HenceDomain of R=2,6,9Range of R=4,6,18,27,54

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