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6

Match each of the sets on the left described in the roster from with the same set on the right described in the set-builder from:

Column I | Column II | ||

(i) | {–5, 5} | (a) | {x : x ϵ Z and x |

(ii) | {1, 2, 3, 6, 9, 18} | (b) | {x : x ϵ N and x |

(iii) | {–3, –2, –1, 0, 1, 2, 3} | (c) | {x : x = ϵ Z and x |

(iv) | {P, R, I, N, C, A, L} | (d) | {x : x ϵ N and x is a factor of 18} |

(v) | {1} | (e) | {x : x is a letter in the word ‘PRINCIPAL’} |

8

If and x < 8}, and B = , find :

(i) A ∪ B

(ii) A ∩ B

(iii) A – B

(vi) B – A