Question 1190429
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Choose 4 of the 12 people to be in one group; the number of ways you can do that is "12 choose 4":<br>
{{{C(12,4)=(12*11*10*9)/(4*3*2*1)=495}}}<br>
The remaining 8 people are the other group; there is no choosing left to be done.<br>
ANSWER: b) 495<br>