$\"\"$

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A test contains a section of $\"\"$ true-false questions, so $\"\"$ .

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(a) Find the possible sets of answers to these questions have exactly $\"\"$ correct answers of false.

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Find the term $\"\"$ .

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Substitute $\"\"$ and $\"\"$ .

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$\"\"$ .

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Since $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ . \ \

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The number of possible sets have exactly $\"\"$ correct answers of false are $\"\"$ .

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$\"\"$

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(b) Find the possible sets of answers to these questions have exactly $\"\"$ correct answers of true.

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Find the term $\"\"$ .

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Substitute $\"\"$ and $\"\"$ . \ \

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$\"\"$

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Since $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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The number of possible sets have exactly $\"\"$ correct answers of true are $\"\"$ .

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$\"\"$

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(a) The number of possible sets have exactly $\"\"$ correct answers of false are $\"\"$ .

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(b) The number of possible sets have exactly $\"\"$ correct answers of true are $\"\"$ .