Five marks exercise problems I — task. Mathematics State Board, Class 10.

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Let

$A = \{1,2,3,7\}$ and

$B = \{3,0,-1,7\}$ , which of the following are relation from

$A$ to

$B$ ?

(i)

$R_1 = \{(2,1), (7,1)\}$

(ii)

$R_2 = \{(-1,1)\}$

(iii)

$R_3 = \{(2,-1), (7,7), (1,3)\}$

(iv)

$R_4 = \{(7,-1), (0,3), (3,3), (0,7)\}$

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