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A suitcase lock has 3 dials with the digits 0,1,2,3....,9 on each. How many different settings are possible if all three digits have to be different?

 Jan 15, 2019
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We want to permute any 3 of 10 numbers....so....

 

P (10, 3)   =  720  combinations

 

 

cool cool cool

 Jan 15, 2019

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