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If A = {p,q,r, s} and B = {1, 2, 3}, fi...

If `A = {p,q,r, s} and B = {1, 2, 3}`, find which of the following is not a function from A to B?

A

`R_(1) = {(p, 1), (q, 2), (r, 1), (s, 2)}`

B

`R_(2) = {(p, 1), (q, 2), (r, 1), (s, 1)}`

C

`R_(3) = {(p, 1), (q, 2), (r, 2), (r, 2)}`

D

`R_(4) = {(p, 2), (q, 3), (r, 2), (s, 2)}`

Text Solution

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The correct Answer is:
C
`because` x - coordinates of two brackets are same.
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