Posted: 10/3/2013 10:26:29 AM EDT
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It's easy stuff with factorials, I just forgot how to finish the last part.
the problem is 7!4!/6!2! After everything cancels out I am left with 7 4*3/2*1 My question is for the numerator. Do I multiply 7 and 12 or add 7 and 12? Then I divide the answer by 2 obviously. |
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Quoted:
It's easy stuff with factorials, I just forgot how to finish the last part. the problem is 7!4!/6!2! After everything cancels out I am left with 7 4*3/2*1 My question is for the numerator. Do I multiply 7 and 12 or add 7 and 12? Then I divide the answer by 2 obviously. (7!4!)/(6!2!) = (7!/6!)*(4!/2!) = 7*(4*3) |
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Quoted:
(7!4!)/(6!2!) = (7!/6!)*(4!/2!) = 7*(4*3) Quoted:
Quoted:
It's easy stuff with factorials, I just forgot how to finish the last part. the problem is 7!4!/6!2! After everything cancels out I am left with 7 4*3/2*1 My question is for the numerator. Do I multiply 7 and 12 or add 7 and 12? Then I divide the answer by 2 obviously. (7!4!)/(6!2!) = (7!/6!)*(4!/2!) = 7*(4*3) Ok so multiply. Thanks. |