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How many ways are there to answer a 10-question true/false test, where at least 3 of the questions have been answered with a false?

 Feb 27, 2021
 #1
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I have assumed order counts:

 

7T, 3F          10C3 = 120

6T, 4F           10C4 *= 210

 

etc

 

Add them together.

 Feb 27, 2021

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