Saturday
February 28, 2015

Homework Help: math

Posted by ginger on Friday, February 4, 2011 at 10:13am.

the question is: If you know that 4 of the 10 items on a true-false test are false, how many different ways could you select 4 items to mark as being false?

I think the answer is 10P4=10*9*8*7/4*3*2*1=5040/24=210 ways

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