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Unformatted text preview: = 8 2 3 j j 7. Are the negative integers countable? 8. Are the real numbers between 0 and 2 1 countable? 9. Are numbers that are multiples of 19 countable? 10. (page 237) If A is an uncountable set and B is a countable set, is A B uncountable? 11. (page 253) Use mathematical induction to prove that ) 1 5 ( 3 5 3 5 3 5 3 3 1 2= + + + + + n n whenever n is a nonnegative integer. 12. Show that any postage that is a positive integer number of cents greater than 7 cents can be formed using just 3cent stamps and 5cent stamps. 13. Suppose that A and B are square matrices with AB = BA . Show using induction that AB n = B n A. 1...
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This note was uploaded on 10/22/2009 for the course ECG 765 taught by Professor Fackler during the Fall '07 term at N.C. State.
 Fall '07
 FACKLER

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