Solutions Manual for Problem Solving Approach to Mathematics for Elementary School Teachers 12th Edition by Billstein IBSN 9780321990594 Full clear download (no formatting errors) at: http://downloadlink.org/p/solutions-manual-for-problem-solving-approach-tomathematics-for-elementary-school-teachers-12th-edition-by-billstein-ibsn9780321990594/ Test Bank for Problem Solving Approach to Mathematics for Elementary School Teachers 12th Edition by Billstein IBSN 9780321990594 Full clear download (no formatting errors) at: http://downloadlink.org/p/test-bank-for-problem-solving-approach-to-mathematicsfor-elementary-school-teachers-12th-edition-by-billstein-ibsn-9780321990594/ CHAPTER 2 INNTRODUCTION TO LOGIC AND SETS Assessment 2-1A: Reasoning and Logic: An Introduction 1. (a) False statement. A statement is a sentence that is either true or false, but not both.
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(a) If n = 4, or n = 5, then n < 6 and n > 3, so the statement is true, since it can be shown to work for some natural numbers n. . (b) If n = 10, then n > 0; or if n = 1, then n < 5, so the statement is true.
(b) False statement. 6. (a) (c) Not a statement.
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(d) True statement. 2. (a) There exists at least one natural number n such that n + 8 = 11.
(b)
(b) There exists at least one natural number n such that n 2 = 4. (c) For all natural numbers n, n + 3 = 3 + n. (d) For all natural numbers n, 5n + 4n = 9n. 3. (a) For all natural numbers n, n + 8 = 11. (b) For all natural numbers n, n 2 = 4. (c) There is no natural number x such that x + 3 = 3 + x.
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(d) There is no natural number x such that 5x + 4x = 9x.
(c) Some dogs do not have four legs.