## Discussion Forum

Que. | Let A = {a, b, c, d }, B = { p, q, r, s } denote sets. R : A –> B, R is a function from A to B. Then which of the following relations are not functions ?
(i) { (a, p) (b, q) (c, r) } (ii) { (a, p) (b, q) (c, s) (d, r) } (iii) { (a, p) (b, s) (b, r) (c, q) } |

a. | (i) and (ii) only |

b. | (ii) and (iii) only |

c. | (i) and (iii) only |

d. | None of these |

Answer:(i) and (iii) only |