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Unformatted text preview: A and no odd digits. 5. You draw n lines in the planes in such a way that no two lines are parallel and no subset of three lines intersect at the same point. How many points of intersection are there ? Show by induction that the number of regions dened by the n lines is n ( n + 1) / 2 + 1 . 6. Problems Section 2.5: 4. 1...
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This homework help was uploaded on 04/08/2008 for the course MATH 145 taught by Professor Peche during the Spring '07 term at UC Davis.
 Spring '07
 Peche
 Combinatorics, Permutations

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