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1. |
If-then statements are also called ______________. |
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A. |
conditionals |
B. |
conclusions |
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C. |
reasons |
D. |
hypotheses |
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Hint |
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2. |
Determine the converse of the following if-then statement.
If the flowers are yellow, then they are daffodils. |
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A. |
If the flowers are not yellow, then they are not daffodils. |
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B. |
The flowers are not yellow. |
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C. |
The flowers are not daffodils. |
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D. |
If the flowers are daffodils, then they are yellow. |
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Hint |
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3. |
Which values are a counterexample to the given statement?
If x + y = an even number, then x is even and y is even. |
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A. |
x = 10, y = 9 |
B. |
x = 21, y = 3 |
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C. |
x = 12, y = 6 |
D. |
x = 7, y = 12 |
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Hint |
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4. |
A conditional statement consists of a __________ . |
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A. |
counterexample |
B. |
conclusion only |
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C. |
hypothesis and a conclusion |
D. |
hypothesis only |
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Hint |
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5. |
Which values are a counterexample to the given statement?
If x × y = 0, then x must be 0. |
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A. |
x = 0, y = 0 |
B. |
x = -1, y = 1 |
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C. |
x = 0, y = 1 |
D. |
x = 5, y = 0 |
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Hint |
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