Question 811076
Since it's asking to choose 3 people from 7 and there are no rules about whether order matters we can assume that this is a combination question. Therefore we use a formula of 7C3 (7 choose 3)


={{{7!/(7-3)! 3!}}} 
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={{{7*6*5*4*3*2*1/(4*3*2*1)(3*2*1)}}}
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={{{(7*6*5)/(3*2*1)}}}
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={{{35}}}
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Hopefully that helps. I am new here and have ZERO clue how to use this formula system. Took me well over 30 mins to post something that simple lol