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OpenStudy (anonymous):
A combination lock has 6 different numbers. If each number can only be used ONCE, how many different combinations are possible?
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OpenStudy (anonymous):
6!=?
OpenStudy (anonymous):
?
OpenStudy (anonymous):
uh have you learnt factorial?
OpenStudy (anonymous):
yea
OpenStudy (anonymous):
how many digits are there? 0-9? there are 6 slots, right?
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OpenStudy (anonymous):
yes 6 slots
OpenStudy (anonymous):
I don't know if its 1-9
OpenStudy (anonymous):
whoa okay that is one vague question anyway, assuming that there are 6 to choose from, and they all have to be unique, use the 6! factorial thing which means 6x5x4x3x2x1 to get your answer
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