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Question

If A = {1, 2, 3, 4, 5, 6, 7, 8, 9} Relation R from A to A by R = {(x, y):y = x + 3}. Find Domain, Co domain and Range of R.


A

Domain = {1, 2, 3, 4, 5, 6}, Co-domain = {1, 2, 3, 4, 5, 6, 7, 8, 9}, Range = {4, 5, 6, 7, 8, 9}

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B

Domain = {1, 2, 3, 4, 5, 6, 7, 8, 9}, Co-domain = {1, 2, 3, 4, 5, 6, 7, 8, 9}, Range = {1, 2, 3, 4, 5, 6, 7, 8, 9}

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C

Domain = {1, 2, 3, 4, 5}, Co-domain = {6, 7, 8, 9}, Range = {6, 7, 8, 9}

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D

Domain = {2, 3, 4, 5, 6}, Co-domain = {1, 2, 3, 4, 5, 6, 7, 8, 9}, Range = {4, 5, 6, 7, 8, 9}

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Solution

The correct option is A

Domain = {1, 2, 3, 4, 5, 6}, Co-domain = {1, 2, 3, 4, 5, 6, 7, 8, 9}, Range = {4, 5, 6, 7, 8, 9}


R = {(x, y):y = x + 3}

R = {(x, y):y = x + 3} R = {(1, 4), (2, 5), (3, 6), (4, 7), (5, 8), (6, 9)}

Domain = {1, 2, 3, 4, 5, 6}

set of first component of all the ordered pair which belong to R

Co-domain = {1, 2, 3, 4, 5, 6, 7, 8, 9}

All the elements of set B is called Co domain of Relation R

Range = {4, 5, 6, 7, 8, 9}

set of second components of all the ordered pairs which belong to R.


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